| Cover | Aug. 16, 2021 |
| Affiliate, Collateralized Security [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 16, 2021 |
| Entity File Number | 001-40207 |
| Entity Registrant Name | Waldencast Acquisition Corp. |
| Entity Central Index Key | 0001840199 |
| Entity Tax Identification Number | 98-1575727 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 10 Bank Street |
| Entity Address, Address Line Two | Suite 560 |
| Entity Address, City or Town | White Plains |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10606 |
| City Area Code | (917) |
| Local Phone Number | 546-6828 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant |
| Trading Symbol | WALDU |
| Security Exchange Name | NASDAQ |
| Class A ordinary shares, par value $0.0001 per share | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Class A ordinary shares, par value $0.0001 per share |
| Trading Symbol | WALD |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 |
| Trading Symbol | WALDW |
| Security Exchange Name | NASDAQ |
