| Cover | Mar. 31, 2021 | Dec. 31, 2020 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Mar. 31, 2021 | |
| Entity Registrant Name | TARSUS PHARMACEUTICALS, INC. | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 012-3456 | |
| Entity Tax Identification Number | 81-4717861 | |
| Entity Address, Address Line One | 15440 Laguna Canyon Road, Suite 160 | |
| Entity Address, City or Town | Irvine | |
| Entity Address, State or Province | CA | |
| Entity Address, Postal Zip Code | 92618 | |
| City Area Code | 949 | |
| Local Phone Number | 409-9820 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share | |
| Trading Symbol | TARS | |
| Security Exchange Name | NASDAQ | |
| Entity Emerging Growth Company | true | |
| Entity Ex Transition Period | true | |
| Entity Central Index Key | 0001819790 | |
| Amendment Flag | false |
