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Document And Entity Information
 12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Amendment Description AMENDMENT NO.1
Document Type S-3/A
Entity Registrant Name NovaBay Pharmaceuticals, Inc.
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 68-0454536
Entity Address, Address Line One 2000 Powell Street, Suite 1150
Entity Address, City or Town Emeryville
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94608
City Area Code 510
Local Phone Number 899-8838
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Entity Central Index Key 0001389545
Amendment Flag true