Maximum Usage Rate of Zinc Oxide in Acne Formulations

Zinc Oxide is a versatile ingredient used in acne care for its antibacterial and skin-soothing properties. The maximum usage rate in cosmetic formulations is generally 25%.

For acne-specific products, the concentration varies by application:

• Spot Treatments: Often used at higher concentrations, typically 10-20%, to effectively absorb oil and calm inflammation in specific areas.
• Daily Acne Creams or Lotions: Usually formulated at 1-5% to provide soothing benefits without leaving a heavy white residue on the skin.

Recommended Zinc Oxide Types for Acne

For acne-focused formulations, it is best to use high-purity, uncoated grades:

• Zinc Oxide (Ultra-Fine, Non-Yellow, Non-Coated, USP): A high-purity pharmaceutical grade (USP) with ultra-fine particles. It is pure white and ideal for acne treatments, wound healing, and sensitive skin products. (Usage: 0.1-20%)
• Zinc Oxide (Micronized): An uncoated micronized powder suitable for antiseptic and protective formulas, such as diaper rash or deodorant products. (Usage: 1-25%)

Formulation Tips

• Dispersion: Zinc Oxide does not dissolve in water; it must be dispersed. Using a high-speed mixer is recommended to ensure the powder is evenly distributed and does not clump.
• pH Stability: Formulations containing Zinc Oxide should ideally maintain a pH between 7.0 and 8.5 for the best stability.

You can explore more ingredients for acne-prone skin in the Anti-Bacteria (Acne) category.