Could My Shampoo and Conditioner Routine Prevent Hair Regrowth?

My hair is dry so I shampoo and condition once a week and spray in a condtioner everyday. Is it possible that my routine could cause a build up and prevent hair regrowth?

While I doubt your hair washing regimen is preventing hair growth or promoting hair loss, there may be a hygiene issue. There are no topical shampoos, conditioners, or medications (other than minoxidil) that are proven to grow hair.