Cover - shares	9 Months Ended
	Sep. 30, 2022	Nov. 08, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-40378
Entity Registrant Name	The Honest Company, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	90-0750205
Entity Address, Address Line One	12130 Millennium Drive
Entity Address, Address Line Two	#500
Entity Address, City or Town	Los Angeles
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90094
City Area Code	888
Local Phone Number	862-8818
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Trading Symbol	HNST
Security Exchange Name	NASDAQ
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		92,672,893
Entity Central Index Key	0001530979
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false