Zinc Oxide
⚠ EU RestrictedIdentification
CAS Number 1314-13-2
EINECS / EC 215-222-5
CosIng Ref 38968
Chemical Name oxozinc
IUPAC Name —
Formula OZn
Mol. Weight 81.4 g/mol
InChIKey XLOMVQKBTHCTTD-UHFFFAOYSA-N
Function & Classification
Primary Function Skin Protecting
Secondary Functions UV Filter, Opacifying
Origin Mineral
Category Minerals & Inorganics
Manufacturer COSMER KİMYA A.Ş.
EU Regulatory Status
Max Leave-on 25%
Max Rinse-off 25%
Restrictions Max 25% (nano and non-nano)
Conditions of Use Max 25% in sunscreen products. Nano form permitted in face and body sunscreen — not in spray/aerosol.
Mandatory Warning Nano: do not use in spray or aerosol products that could be inhaled.
SCCS Opinion View SCCS opinion →
Safety Profile
2 / 10
Comedogenic Rating: 0/5
Will not clog pores — safe for acne-prone skin
Skin Type Compatibility
Acne-Prone ✓ Safe
Fungal Acne Safe ✓ Safe
Toxicology Profile
NOAEL 200 mg/kg bw/day (oral, rat, 90-day) SCCS/1589/17
Sensitization Non-sensitizer
Genotoxicity Non-genotoxic
Phototoxicity Non-phototoxic
Dermal Absorption 0.01%
LD₅₀ Oral >5000 mg/kg (rat)
LD₅₀ Dermal >2000 mg/kg (rat)
Skin Irritation (Draize) 0.0 / 4.0
Eye Irritation (Draize) 0.5 / 4.0
Source SCCS Opinion ↗
Formulation Guidelines
Solubility insoluble.
Benefits UV protection; soothing; antimicrobial
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