Document and Entity Information	3 Months Ended
	Mar. 31, 2024
Document and Entity Information [Abstract]
Document Type	S-1/A
Entity Registrant Name	AEON Biopharma, Inc.
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Central Index Key	0001837607
Amendment Flag	true
Amendment Description	AMENDMENT NO. 4