Calcium Aluminum Borosilicate is an inert, synthetic glass-like mineral used in cosmetics, primarily as a substrate for shimmer and pearlescent effects in makeup and some skincare products. It is generally considered non-reactive and is valued for providing sparkle, light reflection, and texture without significant skin penetration.
| Reported effect | How often | Notes |
|---|---|---|
| Mechanical irritation | Rare | Coarse particles may cause minor physical irritation or scratching, particularly near the eyes. |
| Contact allergy or sensitivity | Very rare | Rarely reported; the material itself is largely inert, so reactions are typically attributed to coatings or co-formulated ingredients. |
| Eye irritation | Rare | Loose particles can cause discomfort if they enter the eye. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.