| Document and Entity Information | Dec. 03, 2021 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001817944 |
| Document Type | 8-K |
| Document Period End Date | Dec. 3, 2021 |
| Entity Registrant Name | CLARUS THERAPEUTICS HOLDINGS, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39802 |
| Entity Tax Identification Number | 85-1231852 |
| Entity Address, Address Line One | 555 Skokie Boulevard |
| Entity Address, Address Line Two | Suite 340 |
| Entity Address, City or Town | Northbrook |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60062 |
| City Area Code | (847) |
| Local Phone Number | 562-4300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common stock, par value $0.0001 per share |
| Trading Symbol | CRXT |
| Security Exchange Name | NASDAQ |
| Exercise Of Warrants Event [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants to purchase one share of common stock at an exercise price of $11.50 |
| Trading Symbol | CRXTW |
| Security Exchange Name | NASDAQ |
