research Tolerability of hair cleansing conditioners: a double-blind randomized, controlled trial designed to evaluate consumer complaints to the U.S. Food and Drug Administration
In this double-blind, randomized controlled study, researchers found that Wen by Chaz Dean Sweet Almond Mint Cleansing Conditioner was similarly tolerated compared to three other hair cleansing conditioners and was significantly better tolerated than salicylic acid shampoo or baby shampoo in terms of skin reactions.