Zinc oxide

Zinc Oxide is a white mineral powder commonly used in cosmetic and personal care formulations as a physical UV filter, skin protectant, and soothing agent. It helps protect the skin from harmful UVA and UVB rays while providing calming and protective benefits for sensitive or irritated skin.

This versatile ingredient is widely used in sunscreens, diaper rash creams, calamine lotions, acne products, powders, ointments, and protective skincare formulations. Zinc Oxide also helps reduce redness and irritation while supporting the skin barrier.

Depending on particle size, Zinc Oxide may be used in both transparent sunscreen formulations and traditional white protective creams.

INCI Name

Zinc Oxide

Functions

• UV filter
• Skin protectant
• Opacifying agent
• Soothing agent
• Anti-irritant
• Bulking agent

Benefits in Formulation

• Provides broad-spectrum UV protection
• Helps soothe irritated skin
• Supports skin barrier protection
• Reduces redness and discomfort
• Useful in acne and sensitive skin formulations
• Adds opacity and coverage to formulations

Usage Rate

1% – 25%

Typical usage:

• Sunscreens: 5–25%
• Baby care products: 5–15%
• Acne treatments: 1–10%
• Creams & lotions: 1–5%
• Powders: 2–10%

Solubility

• Insoluble in water and oil
  Dispersible in oils and emulsions

pH Stability

Best stability at pH 6 – 8

Compatibility

Compatible with:

• Oils and butters
• Emulsifiers
• Waxes
• Mineral-based ingredients
• Most cosmetic raw materials
• May interact with:
• Strong acids
• Some unstable active ingredients under certain conditions