| Cover - USD ($) | 12 Months Ended | ||
| Dec. 31, 2023 | Apr. 10, 2024 | Jun. 30, 2023 | |
| Document Type | 10-K/A | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 on Form 10-K/A (the “Amendment”) amends the Annual Report on Form 10-K of the Company for the fiscal year ended December 31, 2023, as filed with the United States Securities and Exchange Commission (the “SEC”) on April 10, 2024 (the “Original Report”). Specifically, this Amendment amends and restates Part II, Item 9A, “Controls and Procedures” in its entirety to include management’s annual report on internal control over financial reporting as required by Item 308(a) of Regulation S-K, The Original Report, as amended by this Amendment, is referred to as the “Annual Report.” | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Document Period End Date | Dec. 31, 2023 | ||
| Document Fiscal Period Focus | FY | ||
| Document Fiscal Year Focus | 2023 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity File Number | 001-41173 | ||
| Entity Registrant Name | NexGel, Inc. | ||
| Entity Central Index Key | 0001468929 | ||
| Entity Tax Identification Number | 26-4042544 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Address, Address Line One | 2150 Cabot Blvd West | ||
| Entity Address, Address Line Two | Suite B | ||
| Entity Address, City or Town | Langhorne | ||
| Entity Address, State or Province | PA | ||
| Entity Address, Postal Zip Code | 19047 | ||
| City Area Code | (215) | ||
| Local Phone Number | 702-8550 | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | No | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | true | ||
| Elected Not To Use the Extended Transition Period | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 10,695,605 | ||
| Entity Common Stock, Shares Outstanding | 6,227,624 | ||
| Documents Incorporated by Reference [Text Block] | None in this Amendment No. 1 to Form 10-K/A. | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Auditor Name | Turner, Stone & Company, L.L.P | ||
| Auditor Location | Dallas, Texas | ||
| Auditor Firm ID | 76 | ||
| Common Stock, par value $0.001 | |||
| Title of 12(b) Security | Common Stock, par value $0.001 | ||
| Trading Symbol | NXGL | ||
| Security Exchange Name | NASDAQ | ||
| Warrants to Purchase Common Stock | |||
| Title of 12(b) Security | Warrants to Purchase Common Stock | ||
| Trading Symbol | NXGLW | ||
| Security Exchange Name | NASDAQ |
