Does washing your hair with laundry detergent strip your hair color?
There is no proof that detergent can strip hair color, instead many people said that it is not good for your hair and scalp. To strip color in your hair you better see a beautician cause I think they know much better how to do it safely.
No studies have shown that laundry detergent can remove hair color. However, using it on your hair can cause heavy damage and your hair can deteriorate.