Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation Our consolidated financial statements include our accounts and those of our wholly-owned subsidiaries, and have been prepared in conformity with GAAP. All intercompany transactions have been eliminated. Reclassification At the beginning of 2023, we changed our presentation of internal-use software where approximately $8.3 million has been reclassified from property and equipment, net into intangible assets, net. This reclassification has no impact on net loss or cash flows. The table below presents the impact of the reclassification: As of December 31, 2022 Balance As Previously Reported (1) Reclassification Balance As Reclassified Property and equipment, net $ 22,139 $ (8,340) $ 13,799 Intangible assets, net $ 27,004 $ 8,340 $ 35,344 (1) Amount as filed with our Annual Report on Form 10-K for the year ended December 31, 2022 on the consolidated balance sheets, as filed with the SEC on February 28, 2023. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in the consolidated financial statements and accompanying notes. These estimates form the basis for judgments we make about the carrying values of our assets and liabilities, which are not readily apparent from other sources. We base our estimates and judgments on historical information and on various other assumptions that we believe are reasonable under the circumstances. GAAP requires us to make estimates and judgments in several areas, including, but not limited to, the incremental borrowing rate used to measure lease liabilities, the recoverability of goodwill and long-lived assets, useful lives associated with property and equipment and intangible assets, the period of benefit associated with deferred costs, revenue recognition (including the timing of satisfaction of performance obligations, estimating variable consideration, estimating stand-alone selling prices of promised goods and services, and allocation of transaction price to performance obligations), deferred revenue classification, valuation and assumptions underlying stock-based compensation and income taxes. As of the date of issuance of these consolidated financial statements, we are not aware of any specific event or circumstance that would require us to update our estimates, judgments or revise the carrying value of our assets or liabilities. These estimates may change as new events occur and additional information is obtained, and are recognized in the consolidated financial statements as soon as they become known. Actual results could differ from those estimates and any such differences may be material to our consolidated financial statements. Risks and Uncertainties Impact of the Macroeconomic Environment on our Business The U.S. and global financial markets have experienced significant volatility in recent years, which has led to disruptions to commerce and pricing stability, impacts to foreign exchange rates, labor shortages, global inflation, higher interest rates and supply chain disruptions. Due to current inflationary pressures, we have experienced higher costs throughout our business, which we expect may continue during 2024. The ultimate impact of the current and anticipated global economic conditions is highly uncertain and we do not yet know the full extent of potential delays or impacts on our regulatory process, our manufacturing operations, supply chain, end user demand for our Products, commercialization efforts, business operations, clinical trials and other aspects of our business and the aesthetics industry, the healthcare systems or the global economy as a whole. Concentration of Business Risk We rely on a limited number of third-party suppliers for the manufacturing of DAXXIFY ® . In particular, we outsource the manufacture of bulk peptide through an agreement with a single supplier, and we currently primarily manufacture DAXXIFY ® commercial drug product supply through ABPS. To decrease the risk of an interruption to our drug supply, we maintain an inventory of peptide. In addition, we plan to utilize the PCI facility, if approved, for the clinical and commercial production of DAXXIFY ® drug product. However, if and until the PCI facility is approved, we are dependent on the ABPS facility. If ABPS or the bulk peptide supplier is unable to fulfill its manufacturing obligations for any reason, such an event could make it difficult or, in certain cases, impossible for us to continue to manufacture our drug product and/or drug substance for a substantial period of time. Our product revenue relies on one third-party distributor for our products. Concentration of Credit Risk Financial instruments that potentially subject us to a concentration of credit risk consist of short-term investments. Under our investment policy, we limit our credit exposure by investing in highly liquid funds and debt obligations of the U.S. government and its agencies with high credit quality. Our cash, cash equivalents, and short-term investments are held in the U.S. Such deposits may, at times, exceed federally insured limits. We have not experienced any significant losses on our deposits of cash, cash equivalents, and short-term investments. Cash and Cash Equivalents We consider all highly liquid investment securities with remaining maturities at the date of purchase of three months or less to be cash equivalents. Restricted Cash As of December 31, 2023, our restricted cash balance was $7.4 million, which consisted of $6.6 million of deposits related to letters of credit and $0.8 million related to securing our facility leases that will remain until the end of the leases. As of December 31, 2022, our restricted cash balance was $6.1 million, which consisted of $5.4 million of deposits related to letters of credit and $0.7 million related to securing our facility leases that will remain until the end of the leases. These balances were included in restricted cash on the accompanying consolidated balance sheets and within the cash, cash equivalents, and restricted cash balance on the consolidated statement of cash flows. Accounts receivable, net Trade accounts receivable are recorded at the invoiced amount and do not bear interest. Such accounts receivable have been reduced by an allowance for doubtful accounts, which is our best estimate of the amount of probable credit losses in our existing accounts receivable. We determine the allowance based on customer specific experience and the aging of such receivables, among other factors. The allowance for doubtful accounts as of December 31, 2023 and 2022 was $1.0 million and $0.1 million, respectively. We do not have any off-balance-sheet credit exposure related to our customers. Accounts receivable are also recorded net of estimated product returns which are not material. Investments Investments generally consist of securities with original maturities greater than three months and remaining maturities of less than one year. We do not have long-term investments with remaining maturities greater than one year. We determine the appropriate classification of our investments at the time of purchase and reevaluate such determination at each balance sheet date. All of our investments are classified as available-for-sale and carried at fair value, with the change in unrealized gains and losses reported as a separate component of other comprehensive income (loss) on the consolidated statements of operations and comprehensive loss and accumulated as a separate component of stockholders’ equity (deficit) on the consolidated balance sheets. Interest income includes interest, amortization of purchase premiums and discounts, realized gains and losses on sales of securities and other-than-temporary declines in the fair value of investments, if any. The cost of securities sold is based on the specific-identification method. We monitor our investment portfolio for potential impairment on a quarterly basis. If the carrying amount of an investment in debt securities exceeds its fair value and the decline in value is determined to be other-than-temporary, the carrying amount of the security is reduced to fair value and a loss is recognized in operating results for the amount of such decline. In order to determine whether a decline in value is other-than-temporary, we evaluate, among other factors, the cause of the decline in value, including the creditworthiness of the security issuers, the number of securities in an unrealized loss position, the severity and duration of the unrealized losses, and our intent and ability to hold the security to maturity or forecast recovery. Inventories Inventories consist of raw materials, work in process, and finished goods held for sale to customers. Cost is determined using the first-in-first-out method. Inventory costs include raw materials, labor, quality control, and overhead associated with the cost of production and right-of-use amortization associated with the embedded finance lease. Inventory valuation reserves are established based on a number of factors including, but not limited to, inventory not conforming to product specifications, excess and obsolescence, or application of the lower of cost or net realizable value concepts. The determination of events requiring the establishment of inventory valuation reserves, together with the calculation of the amount of such reserves, may require judgment. Products manufactured at a third-party contract manufacturer site prior to that site’s regulatory approval may be capitalized as inventory when the future economic benefit is deemed probable. A number of factors are considered in determining probability, including the historical experience of achieving regulatory approvals for the manufacturing process, the progress along the approval process, the shelf life of the product, and any other impediments identified. If the criteria for capitalizing inventory are not met, the pre-approval manufacturing costs of products are recognized as research and development expense in the period incurred. Fair Value of Financial Instruments We use fair value measurements to record fair value adjustments to certain financial and non-financial assets and liabilities to determine fair value disclosures. The accounting standards define fair value, establish a framework for measuring fair value, and require disclosures about fair value measurements. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the principal or most advantageous market in which we would transact are considered along with assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of nonperformance. The accounting standard for fair value establishes a fair value hierarchy based on three levels of inputs, the first two of which are considered observable and the last unobservable, that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three levels of inputs that may be used to measure fair value are as follows: • Level 1 — Observable inputs, such as quoted prices in active markets for identical assets or liabilities; • Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and • Level 3 — Valuations based on unobservable inputs to the valuation methodology and including data about assumptions market participants would use in pricing the asset or liability based on the best information available under the circumstances. Property and Equipment, net Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Computer equipment and vehicles are generally depreciated over three years. Lab equipment, furniture and fixtures are generally depreciated over five years. Manufacturing machinery and equipment are generally depreciated over seven fifteen When property and equipment are retired or otherwise disposed of, the costs and accumulated depreciation are removed from the consolidated balance sheets and any resulting gain or loss is reflected in the consolidated statements of operations and comprehensive loss in the period realized. Leases We account for a contract as a lease when it has an identified asset that is physically distinct and we have the right to control the asset for a period of time while obtaining substantially all of the asset’s economic benefits. We determine if an arrangement is a lease or contains a lease at inception. For arrangements that meet the definition of a lease, we determine the initial classification and measurement of our right-of-use asset and lease liability at the lease commencement date and thereafter if modified. We do not recognize right-of-use assets or lease liabilities for those leases that qualify as a short-term lease. The lease term includes any renewal options that we are reasonably assured to exercise. The present value of lease payments is determined by using the interest rate implicit in the lease, if that rate is readily determinable; otherwise, we use our estimated secured incremental borrowing rate for that lease term. For our real estate operating leases, rent expense is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in operating expenses in the consolidated statements of operations and comprehensive loss. In addition to rent, the real estate operating leases may require us to pay additional amounts for variable lease costs which includes taxes, insurance, maintenance, and other expenses, and the variable lease costs are generally referred to as non-lease components. Variable lease cost related to our operating leases are expensed as incurred. For real estate operating leases, we have elected to apply the practical expedient and account for the lease and non-lease components as a single lease component. For our finance lease for a manufacturing fill-and-finish line, interest expense is recognized using the effective interest method. For finance leases, the interest expense on the lease liability and the amortization of the right-of-use asset is presented in a manner consistent with how we present other interest expense and depreciation and amortization of similar assets. For our manufacturing fill-and-finish line asset group, we have elected to apply the practical expedient and account for the lease and non-lease components as a single lease component. Variable lease costs related to our finance lease are expensed as incurred. Impairment of Long-lived Assets We evaluate long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of long-lived assets may not be recoverable. Events and changes in circumstances considered important that could result in an impairment review of long-lived assets include (i) a significant decrease in the market price of a long-lived asset; (ii) a significant adverse change in the extent or manner in which a long-lived asset is being used or in its physical condition; (iii) a significant adverse change in legal factors or in the business climate that could affect the value of a long-lived asset, including an adverse action or assessment by a regulator; (iv) an accumulation of costs significantly in excess of the amount originally expected for the acquisition or construction of a long-lived asset; (v) a current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset; and (vi) a current expectation that, more likely than not (more than 50%), a long-lived asset will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. The impairment evaluation of long-lived assets includes an analysis of estimated future undiscounted net cash flows expected from the use and eventual disposition of the long-lived assets over their remaining estimated useful lives. If the estimate of future undiscounted net cash flows is insufficient to recover the carrying value of the long-lived assets over the remaining estimated useful lives, we record an impairment loss in the amount by which the carrying value of the long-lived assets exceeds the fair value. Fair value is generally measured based on discounted cash flow analysis. For the year ended December 31, 2023, we recorded $16.0 million of impairment related to intangible assets. For further information on quantitative intangible asset impairment tests and related impairment amounts, refer to Note 6 . Goodwill and Impairment Goodwill represents the excess of the purchase price of the acquired business over the estimated fair value of the identifiable net assets acquired. All of the Company's goodwill balance is associated with the Service reporting unit. Goodwill is not amortized but is tested for impairment at least annually at the reporting unit level in the fourth quarter of each calendar year, or more frequently if events or changes in circumstances indicate that the reporting unit might be impaired. Impairment loss, if any, is recognized based on a comparison of the fair value of the reporting unit to its carrying value, without consideration of any recoverability. In assessing goodwill for impairment, we first assess qualitative factors to determine whether it is more likely than not that the fair value is less than its carrying amount. If we conclude it is more likely than not that the fair value of a reporting unit is less than its carrying amount, a quantitative impairment test is performed. If we conclude that goodwill is impaired, an impairment charge is recorded to the extent that the reporting unit’s carrying value exceeds its fair value. For the years ended December 31, 2023 and 2022, we recorded $77.2 million and $69.8 million of goodwill impairment, respectively. For further information on quantitative goodwill impairment tests and related impairment amounts, refer to Note 6 . Intangible Assets, net Intangible assets consist of distribution rights acquired from the filler distribution agreement with Teoxane, intangible assets acquired from the HintMD Acquisition, internally developed technology, and other purchased software. Finite-lived intangible assets are carried at cost, less accumulated amortization on the consolidated balance sheets, and are amortized on a ratable basis over their estimated useful life. Internal-use software, whether purchased or developed, is capitalized at cost and amortized using the straight-line method over its estimated useful life, which is generally three years. Costs associated with internally developed software are expensed until the point at which the project has reached the development stage. Subsequent additions, modifications or upgrades to internal-use software are capitalized only to the extent that they provide additional functionality. Software maintenance and training costs are expensed in the period in which they are incurred. The capitalization of internal-use software requires judgment in determining when a project has reached the development stage and the period over which we expect to benefit from the use of that software. Revenue Revenue is measured according to Accounting Standards Codification Topic 606, Revenue from Contracts with Customers (ASC 606). To determine revenue recognition for arrangements that we determine are within the scope of ASC 606, Revenue from Contracts with Customers, we perform the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) we satisfy a performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, we assess the goods or services promised within the contract and determine those that are performance obligations and assess whether the promised good or service, or a bundle of goods and services is distinct. We then recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. In revenue arrangements involving third parties, we recognize revenue as the principal when we maintain control of the product or service until it is transferred to our customer; under other circumstances, we recognize revenue as an agent in the sales transaction. Determining whether we have control requires judgment over certain considerations, which generally include whether we are primarily responsible for the fulfillment of the underlying products or services, whether we have inventory risk before fulfillment is completed, and if we have discretion to establish prices over the products or services. We evaluate whether we are the principal or the agent in our revenue arrangements involving third parties should there be changes impacting control in transferring related goods or services to our customers. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by us from a customer, are excluded from revenue. We currently generate product revenue from the sale of our Products, service revenue from payment processing and subscriptions to the platform, and collaboration revenue from an onabotulinumtoxinA biosimilar program with Viatris and Fosun. Product Revenue Our product revenue is recognized from the sale of our Products to our customers. We sell our Products to our customers through our third-party distributor and maintain control throughout the sales transactions as the principal. We recognize revenue from product sales when control of the product transfers, generally upon delivery, to the customers in an amount that reflects the consideration we received or expect to receive in exchange for those goods as specified in the customer contract. We accept product returns under limited circumstances which generally include damages in transit or ineffective product. Third-party distributor fees associated with product logistics are accounted for as fulfillment costs and are included in cost of product revenue in the accompanying statements of operations and comprehensive loss. Service Revenue Our service revenue is related to payment processing services. Payment processing services are charged on a rate per transaction basis (usage-based fees), with no minimum usage commitments. For revenue related to the HintMD Platform, which was discontinued during the second quarter of 2023, we were the accounting agent for arrangement and we recognized revenue generated from these transactions on a net basis. Conversely, we are the payment facilitator for the arrangements under the OPUL ® platform and are considered the accounting principal, and the associated service revenue generated from the same transactions are recognized on a gross basis. In September 2023, we commenced a plan to exit the Fintech Platform business, discussed below in Note 4 . Costs to Obtain Contracts with Customers Certain costs to obtain a contract with a customer should be capitalized, to the extent recoverable from the associated contract margin, and subsequently amortized as the products or services are delivered to the customer inclusive of expected renewals. We expect such costs to generally include sales commissions and related fringe benefits. For similar contracts with which the expected delivery period is one year or less, we apply the practical expedient to expense such costs as incurred in the consolidated statements of operations and comprehensive loss. Otherwise, such costs are capitalized on the consolidated balance sheets, and are amortized over the expected period of benefit to the customer. The determined period of benefit for payment processing and subscription services is subject to re-evaluation periodically. Collaboration Revenue We generate revenue from collaboration agreements, which are generally within the scope of ASC 606, where we license rights to certain intellectual property or certain product candidates and perform research and development services for third parties. The terms of these arrangements may include payment of one or more of the following: non-refundable upfront fees, milestone payments, and royalties on future net sales of licensed products. Performance obligations are promises to transfer distinct goods or services to a customer. Promised goods or services are considered distinct when (i) the customer can benefit from the good or service on its own or together with other readily available resources and (ii) the promised good or service is separately identifiable from other promises in the contract. We utilize judgment to assess whether the collaboration agreements include multiple distinct performance obligations or a single combined performance obligation. In assessing whether a promised good or service is distinct in the evaluation of a collaboration arrangement subject to ASC 606, we consider various promised goods or services within the arrangement including but not limited to intellectual property license granting, research, manufacturing and commercialization, along with the intended benefit of the contract in assessing whether one promise is separately identifiable from other promises in the contract. We also consider the capabilities of the collaboration partner regarding these promised goods or services and the availability of the associated expertise in the general marketplace. If a promised good or service is not distinct, we are required to combine that good or service with other promised goods or services until we identify a bundle of goods or services that is distinct. To estimate the transaction price, which could include fixed considerations or variable considerations, ASC 606 provides two alternatives to use when estimating the amount of variable considerations: the expected value method and the most likely amount method. Under the expected value method, an entity considers the sum of probability-weighted amounts in a range of possible consideration amounts. Under the most likely amount method, an entity considers the single most likely amount in a range of possible consideration amounts. The method selected can vary between contracts and is not a policy election; however, once determined, the method should be consistently applied throughout the life of the contract. For collaboration arrangements that include variable considerations such as development, regulatory or commercial milestone payments, the associated milestone value is included in the transaction price if it is probable that a significant revenue reversal would not occur. Milestone payments that are not within the control of us or the licensee, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and the license is deemed to be the predominant item to which the royalties relate, we recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). For arrangements with multiple performance obligations, the transaction price is then allocated to each performance obligation on a relative stand-alone selling price basis. We assess the nature of the respective performance obligation to determine whether it is satisfied over time or at a point in time and, if over time, the appropriate method of measuring proportional performance for purposes of recognizing revenue. We evaluate the measure of proportional performance each reporting period and, if necessary, adjust the measure of performance and related revenue recognition. At the end of each subsequent reporting period, we re-evaluate the probability of achievement of each such milestone and any related constraint, and if necessary, adjust our estimates of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenues and earnings in the period of adjustment. Research and Development Expense Research and development expense are charged to operations as incurred. Research and development expense include, but are not limited to, personnel expenses, clinical trial supplies, fees for clinical trial services, manufacturing costs incurred before FDA approval becomes probable, consulting costs and allocated overhead, including rent, equipment, depreciation, and utilities. Assets acquired that are utilized in research and development that have no alternative future use are also expensed as incurred. Advertising Expense Cost related to advertising are expensed as incurred and included within selling, general and administrative expenses in the consolidated statement of operations and comprehensive loss. Advertising expense was $8.4 million, $5.1 million and $6.2 million for the years ended December 31, 2023, 2022 and 2021, respectively. Income Taxes We account for current and deferred income taxes by assessing and reporting tax assets and liabilities in our consolidated balance sheet and our statement of operations and comprehensive loss. We estimate current income tax exposure and temporary differences which result from differences in accounting under GAAP and tax purposes for certain items, such as accruals and allowances not currently deductible for tax purposes. These temporary differences result in deferred tax assets or liabilities. In general, deferred tax assets represent future tax benefits to be received when certain expenses previously recognized in the consolidated statements of operations and comprehensive loss become deductible expenses under applicable income tax laws or when net operating loss or credit carryforwards are utilized. Accordingly, realization of deferred tax assets is dependent on future taxable income against which these deductions, losses and credits can be utilized. Likewise, deferred tax liabilities represent future tax liabilities to be settled when certain amounts of income previously reported in the consolidated statements of operations and comprehensive loss become realizable income under applicable income tax laws. We measure deferred tax assets and liabilities using tax rates applicable to taxable income in effect for the years in which those tax assets are expected to be realized or settled and provide a valuation allowance against deferred tax assets when we cannot conclude that it is more likely than not that some or all deferred tax assets will be realized. Based on the available evidence, we are unable, at this time, to support the determination that it is more likely than not that its net deferred tax assets will be utilized in the future. Accordingly, we recorded a full valuation allowance against the net deferred tax assets as of December 31, 2023 and 2022. We intend to maintain such a valuation allowance until sufficient evidence exists to support its reversal. When foreign income is received in which a foreign withholding tax is required, we treat the withheld amount as a current income tax expense in the period in which the funds are received. We recognize tax benefits from uncertain tax positions only if it expects that its tax positions ar |