Salicylic Acid Shampoo

In this post, I am going to share my salicylic acid shampoo with you. This will be an advanced formulation, as we are working with salicylic acid. I got a salicylic acid (SA) stock solution from Making Cosmetics. They use a surfactant to dissolve the SA. I thought it would be great to make a salicylic acid shampoo. SA is one of the few ingredients that can work in wash-off products. (source) Since the pH will be low, we need to keep that in mind when making our formulation decisions.