Rate My SPF

Calcium Aluminum Borosilicate

What Calcium Aluminum Borosilicate is & what it does

A glass-like mineral used as a substrate for sparkling, light-reflecting pigments. It adds glow and a smooth, refined shimmer.

What does Calcium Aluminum Borosilicate do in skincare?

Calcium Aluminum Borosilicate is a glass-like mineral material used mainly to create optical and visual effects. In cosmetics it often forms the base of pearlescent or shimmer pigments, giving products a glow or light-reflecting finish. It can also act as a bulking or texture agent.

Is Calcium Aluminum Borosilicate safe?

Calcium Aluminum Borosilicate is generally considered safe for use in cosmetics, including products applied to the face. It is an inert, glass-type material that is not readily absorbed by the skin. As with any powdered ingredient, avoiding inhalation of loose product is a sensible precaution.

Is Calcium Aluminum Borosilicate natural or synthetic?

It is typically a synthetic, manufactured material, produced as a fine glass-like substance rather than mined directly. Its components, calcium, aluminum, boron, and silicon, occur naturally, but the ingredient itself is engineered for cosmetic use. This controlled production gives consistent particle size and optical quality.

Sunscreens with Calcium Aluminum Borosilicate

We rate 38 sunscreens that contain it, showing the top 10 by overall score:

← All ingredients