Zinc Borosilicate

AKA: 37341-47-2, Zinc dihydrogen orthosilicate--boric acid (1/1/1)

Synthetic

Not Clean

Glass, borosilicate, an amorphous substance of imprecise composition formed by the fusion of silica in the presence of significant levels of boron oxide, sodium oxide and zinc oxide

Formula

BH5O7SiZn

Mol. Weight

221.30

CAS #

37341-47-2

Form

Powder

Functions

Bulking

Adds Body & Volume

Fights Bacteria

Adds volume

Traditional Use

A synthetic mineral compound developed for cosmetics to provide opacity, smoothness, and mineral-based coverage in makeup applications, created as an alternative to traditional mineral pigments.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR