Zinc Oxide 15%. Inactive: Water/Aqua/Eau ●
TL;DR. This ingredient is a mineral UV filter used in sunscreens and SPF cosmetics to provide broad-spectrum protection, especially across UVA and UVB. At 15%, it functions as a primary sunscreen active rather than a support ingredient.
What does Zinc Oxide 15%. Inactive: Water/Aqua/Eau do in a cosmetic formula?
This ingredient is a mineral UV filter used in sunscreens and SPF cosmetics to provide broad-spectrum protection, especially across UVA and UVB. At 15%, it functions as a primary sunscreen active rather than a support ingredient.
Is Zinc Oxide 15%. Inactive: Water/Aqua/Eau clean?
It is widely accepted in clean-beauty frameworks because it is low-irritation, fragrance-free, and not associated with common cosmetic allergen concerns. Clean-standard friction is usually about particle size, coatings, inhalation risk in loose powders, and whether nanomaterial disclosure is handled clearly.
Is Zinc Oxide 15%. Inactive: Water/Aqua/Eau sustainable?
This material is mineral-derived, so its footprint is tied to mining, refining, and particle processing rather than agriculture. It does not biodegrade because it is inorganic, and environmental assessment depends on particle size, surface treatment, and how much enters waterways from rinse-off or recreational use.
Is Zinc Oxide 15%. Inactive: Water/Aqua/Eau COSMOS-approved?
It is permitted under COSMOS natural and organic products as an approved mineral UV filter, subject to sunscreen-active rules and nanomaterial labeling where applicable. From a Green Chemistry view, it scores well for stability and low reactivity, but less well on renewability and biodegradability because it is a processed inorganic material.
How does Zinc Oxide 15%. Inactive: Water/Aqua/Eau work chemically?
The molecule is an insoluble inorganic particulate that protects by absorbing, scattering, and reflecting UV radiation, with 15% sitting in the common active-use range for broad-spectrum SPF products. It is photostable and pH-stable in typical emulsions, but it can add opacity, raise viscosity, and needs good dispersion, often with surface treatment or film-forming support for even coverage.
Last updated 2026-05-16