Hair is dead: Hair is composed only of dead tissue. It can't "know" what you put on it a few days ago. It can only respond to what you have on it now. This is like saying that your nails become "immune" to your nail polish and so you have to change polish brand frequently. Use s shampoo that makes your hair feel/smell like you want it to feel/smell and don't be fooled by all the ads.
Answered 3/29/2015
3k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question