| Document and Entity Information | Aug. 10, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001819790 |
| Document Type | 8-K |
| Document Period End Date | Aug. 10, 2021 |
| Entity Registrant Name | Tarsus Pharmaceuticals, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39614 |
| Entity Tax Identification Number | 81-4717861 |
| Entity Address, Address Line One | 15440 Laguna Canyon Road |
| Entity Address, Address Line Two | 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 |
| Security 12b Title | Common Stock, par value $0.0001 per share |
| Trading Symbol | TARS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
