Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Jul. 15, 2021
Document Information Line Items
Entity Registrant Name	Waldencast Acquisition Corp.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	0001840199
Entity Current Reporting Status	No
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Entity File Number	001-39660
Entity Incorporation, State or Country Code	E9
Entity Interactive Data Current	Yes
Class A Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		34,500,000
Class B Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		8,625,000