Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Mar. 21, 2025	Jun. 30, 2024
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2024
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--12-31
Entity File Number	001-40021
Entity Registrant Name	AEON Biopharma, Inc.
Entity Central Index Key	0001837607
Entity Tax Identification Number	85-3940478
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	5 Park Plaza
Entity Address, Address 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
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 17.0
Entity Common Stock, Shares Outstanding		10,532,802
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Auditor Name	KPMG LLP
Auditor Location	San Diego, California
Auditor Firm ID	185