|
Polyhydroxystearic Acid is a natural ingredient commonly used in sunscreens
It is a soft wax that is pliable and used most commonly as a coating on oxide particles that give sun protection (this is known as a dispersant)
Made from castor oil, is a natural wax
The reason that oxide particles need a coating/dispersant is to allow them to properly disperse throughout the tube and skin, as they have a tendency to stick together. If they stick together, this means that not all portions of the sunscreen will have the same effectiveness for sun protection
It increases the UV absorption of the sunscreen formula as well as to reduce the annoying white cast left behind by mineral sunscreens
