🔬 How It Actually Works
A polymer of hydroxystearic acid. It is the absolute gold standard for coating and dispersing Titanium Dioxide and Zinc Oxide, drastically reducing their white cast and chalky texture.
💖 Why Your Skin Loves It
Makes mineral sunscreens transparent, spreadable, and highly effective.
💡 Pro Tip
If a mineral sunscreen blends in easily, this is likely why.
🧪 The Mixology Guide
Skincare is chemistry. Here is how Polyhydroxystearic Acid interacts with other active ingredients on your shelf.
✅ Best Friends (Synergy)
Zinc Oxide
⚠️ Arch Enemies (Conflict)
Plays well with most ingredients.