Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 26, 2024	Jun. 30, 2023
Document and Entity Information [Abstract]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
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]	true
Document Financial Statement Restatement Recovery Analysis [Flag]	true
Entity Shell Company	false
Entity Public Float				$ 14.2
Entity Common Stock, Shares Outstanding			39,122,238
Entity Central Index Key	0001837607
Amendment Flag	true
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Description	AEON Biopharma, Inc.  (the “Company,” “AEON,” “we,” “us” or “our”) is filing this Amendment No. 1 to its Annual Report on Form 10-K for the year ended December 31, 2023 (this “Annual Report”) to amend and restate certain items in its Annual Report on Form 10-K for the year ended December 31, 2023, originally filed with the Securities and Exchange Commission (the “SEC”) on March 29, 2024 (the “Original Annual Report”), and its Quarterly Report on Form 10-Q/A for the quarterly period ended September 30, 2023, filed with the SEC on March 29, 2024 (as amended, the “Original Quarterly Report”). The Original Annual Report and Original Quarterly Report should no longer be relied upon.
Auditor Firm ID	185	42
Auditor Name	KPMG LLP	Ernst & Young LLP
Auditor Location	San Diego, California	Irvine, California