v3.25.4
COVER
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Current Fiscal Year End Date --12-31
Document Period End Date Dec. 31, 2025
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-40207
Entity Registrant Name Waldencast plc
Entity Address, Address Line One 81 Fulham Road
Entity Address, City or Town London
Entity Address, Postal Zip Code SW3 6RD
Entity Address, Country GB
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company true
Entity Ex Transition Period false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Entity Central Index Key 0001840199
Amendment Flag false
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2025
Entity Incorporation, State or Country Code X0
Class A Ordinary Shares  
Document Information [Line Items]  
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share
Trading Symbol WALD
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 118,217,630
Redeemable warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share  
Document Information [Line Items]  
Title of 12(b) Security Redeemable warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share
Trading Symbol WALDW
Security Exchange Name NASDAQ
Class B Ordinary Shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 10,019,983
Business Contact  
Document Information [Line Items]  
Entity Address, Address Line One 81 Fulham Road
Entity Address, City or Town London
Entity Address, Postal Zip Code SW3 6RD
Entity Address, Country GB
Contact Personnel Name Michel Brousset
Country Region 44
City Area Code (0)20
Local Phone Number 3196 0264