Our take
Is C9-15 Fluoroalcohol Phosphate a Good Ingredient?
It's effective for long-wear, water-resistant films, but it offers minimal skincare benefit and independent data on it is limited, which is why it's rated Fair; it may also cause transient irritation, especially around the eyes or on sensitive skin.
What it does
Skin Benefits
Improves makeup longevity and creates a flexible film that helps color stay put through sweat and humidity, and improves glide during application for a smoother, more even finish.
Where you'll find it
Uses in Skincare & Cosmetics
Often included in long-wear foundations, liquid eyeliners, mascaras, and setting sprays to boost wear time and water resistance.
Before you use it
Generally considered safe at typical cosmetic levels with low skin penetration. Can cause dryness or stinging, particularly in long-wear eye or lip products; discontinue use if irritation occurs.
Products with C9-15 Fluoroalcohol Phosphate