| Cover | Apr. 06, 2022 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Apr. 6, 2022 |
| Entity Registrant Name | EVOFEM BIOSCIENCES, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-36754 |
| Entity Tax Identification Number | 20-8527075 |
| Entity Address, Address Line One | 12400 High Bluff Drive |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, City or Town | San Diego |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92130 |
| City Area Code | 858 |
| Local Phone Number | 550-1900 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001618835 |
| Common Stock | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share |
| Trading Symbol | EVFM |
| Security Exchange Name | NASDAQ |
| Preferred Stock | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Series A Preferred Stock Purchase Rights, par value $0.0001 per share |
| No Trading Symbol Flag | false |
| Security Exchange Name | NASDAQ |
