v3.26.1
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Mar. 23, 2026
Jun. 30, 2025
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 001-40021    
Entity Registrant Name AEON Biopharma, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 85-3940478    
Entity Address, Address Line One 5 Park Plaza    
Entity Address, Adress Line Two Suite 1750    
Entity Address, City or Town Irvine    
Entity Address State Or Province CA    
Entity Address, Postal Zip Code 92614    
City Area Code 949    
Local Phone Number 354-6499    
Title of 12(b) Security Class A common stock, $0.0001 par value per share    
Trading Symbol AEON    
Security Exchange Name NYSEAMER    
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 Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 8.7
Entity Common Stock, Shares Outstanding   25,303,058  
Documents Incorporated by Reference [Text Block]

Portions of the registrant’s definitive Proxy Statement for its 2026 Annual Meeting of Stockholders, which the registrant intends to file pursuant to Regulation 14A with the Securities and Exchange Commission no later than 120 days after the registrant’s fiscal year ended December 31, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K.

    
Entity Central Index Key 0001837607    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Auditor Firm ID 185    
Auditor Name KPMG LLP    
Auditor Location San Diego, California