Phytosphingosine

Phytosphingosine is a naturally occurring lipid that works as a conditioning agent for both skin and hair. It's a type of ceramide precursor, meaning your skin can use it to help maintain its barrier. In hair products, it coats the strands to improve softness and manageability. Because it's a lipid, it plays well with other moisturizing ingredients and helps lock in hydration without leaving a heavy residue. You'll find it in everything from serums to shampoos. It's gentle and works quietly in the background, which is probably why you've never heard of it.