Zinc Oxide 20% ●
TL;DR. This ingredient is a mineral UV filter used to reflect, scatter, and absorb UVA and UVB radiation in sunscreens and SPF moisturizers. At 20%, it is present at a level typical for broad-spectrum sun protection formulas.
What does Zinc Oxide 20% do in a cosmetic formula?
This ingredient is a mineral UV filter used to reflect, scatter, and absorb UVA and UVB radiation in sunscreens and SPF moisturizers. At 20%, it is present at a level typical for broad-spectrum sun protection formulas.
Is Zinc Oxide 20% clean?
Clean-beauty frameworks generally accept this ingredient in creams and lotions because it is low-sensitizing and does not rely on organic sunscreen chemistry. Scrutiny is higher for inhalable sprays, loose powders, and nano-scale grades because exposure route and particle size matter.
Is Zinc Oxide 20% sustainable?
This material is mineral-derived, so it is not renewable and it does not biodegrade like plant-based organics. It is also highly stable and not bioaccumulative in the usual cosmetic-use context, though nano-scale particles raise more aquatic-impact questions than larger dispersed grades.
Is Zinc Oxide 20% COSMOS-approved?
It is permitted under COSMOS for natural and organic products, including as an approved inorganic UV filter, with nano forms subject to EU approval, labeling, and particle-size conditions. Its Green Chemistry fit is mixed: it is simple, stable, and solvent-free in use, but it is mineral-sourced and not biodegradable in the organic-chemistry sense.
How does Zinc Oxide 20% work chemically?
This compound is an inorganic, amphoteric metal oxide that works by band-gap absorption plus light scattering, with performance strongly influenced by particle size, coating, and dispersion quality. Sunscreen use levels commonly range from about 5% to 25%, and formulators often use surface-treated grades to improve aesthetics, reduce agglomeration, and limit photocatalytic surface activity.
Last updated 2026-08-16