What's co-washing or a co-wash?

3 Answers

Co-washing is using conditioner to cleanse your hair. If you use styling products with the right ingredients, you can stop using shampoo with harsh sulfates and instead a use conditioner to clean and condition your hair. 
Co washing is basicly washing your hair with conditioner
co- washing is like washing or cleansing your hair with conditioner instead of shampoo. co-washing is not as stripping shampoo.