Ingredient
Zinc Stearate
What is Zinc Stearate?
Zinc Stearate is a white, powdery compound made by reacting zinc oxide with stearic acid. It is traditionally used in the production of plastics, rubber, and cosmetics, often as a release agent.
In the context of cosmetics, Zinc Stearate is primarily used as a lubricant and thickener. It helps to improve the texture and application of makeup products by enhancing the slip and even distribution of the product on the skin. The current evidence suggests it is generally regarded as safe, although specific studies on long-term health impacts are limited.
When you see Zinc Stearate on a makeup label, it usually indicates the product will have a smoother application, helping it to spread evenly without caking.
Commonly found in: foundation, blush, eyeshadow, powder, lipstick
What to watch
- In rare cases, inhalation of high quantities might cause respiratory issues.
Benefits
- Improves texture and spreadability of cosmetic products.
The FDA does not have specific restrictions on Zinc Stearate, and it is considered safe in general manufacturing practices.
Research indicates it is safe for topical use, but inhalation studies show possible risks with high exposure levels.
Zinc Stearate is typically plant-derived, making it suitable for vegan use.
Scout's take
Mineral (pigment / slip / absorbent) — safe in topical cosmetics.
More from Scout's analyses
Zinc Stearate is a food-safe lubricant that helps prevent sticking during processing. It is non-toxic in typical exposures and is often used in cosmetics for its stabilizing properties.
from the analysis of RMS Beauty Luminizing Powder Madeira BronzerFound in 3 products
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