Function of Beauty Promo Codes & Coupons September 2026 — Up to 60% Off

Who would’ve thought that you can have your own personalized shampoo delivered to you? With Function of Beauty, you can now do just as that! Function of Beauty team of experts is composed of world-class MIT engineers and data scientists. This team spent years in building Function of Beauty’s own algorithm and machines which can pull hundreds to thousands of ingredients to potentially create millions and billions of unique shampoo and conditioner combinations! All you need to do is to tell this team of experts what you want and need for your hair and voila! Function of Beauty will individually formulate and fill a product that is as unique as you! Worried of animal experiments? Function of Beauty promotes and sells cruelty-free products. This means that all its products have not undergone any animal testing. It promises never to test with animals. Additionally, Function of Beauty products is also 100% vegan. All of its products do not contain any ingredient that is made or derived from animals. Function of Beauty is a part of PETA’s Beauty Without Bunnies program which ensures that all of its products are 100% vegan and cruelty-free. Function of Beauty products is also paraben-free and sulfate-free which guarantees no damage to hair and scalp and also eliminates the possibility of breast cancer which is deeply associated with paraben.