Zinc Oxide 24.7% ●
TL;DR. This ingredient is an inorganic, broad-spectrum UV filter that helps protect against both UVB and UVA exposure. It also adds opacity and can contribute a thicker, more visible finish in formulas.
What does Zinc Oxide 24.7% do in a cosmetic formula?
This ingredient is an inorganic, broad-spectrum UV filter that helps protect against both UVB and UVA exposure. It also adds opacity and can contribute a thicker, more visible finish in formulas.
Is Zinc Oxide 24.7% clean?
It is generally well tolerated and is widely accepted in clean-beauty frameworks, especially in leave-on sun care. The main clean-standard caveats are particle size, nano disclosure, spray or powder inhalation concerns, and heavy-metal purity specifications.
Is Zinc Oxide 24.7% sustainable?
This material is mineral-derived, so it is not renewable or biodegradable in the way plant-based organics can be. It is photostable and has low bioaccumulation concern, but mining, high-temperature processing, and release of fine particles into waterways are the main environmental considerations.
Is Zinc Oxide 24.7% COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic as an approved mineral UV filter when it meets purity, particle-size, and nano-disclosure requirements. Its Green Chemistry profile is mixed, with strong photostability and low systemic absorption, but nonrenewable sourcing and energy-intensive processing.
How does Zinc Oxide 24.7% work chemically?
This compound is an insoluble, amphoteric metal oxide semiconductor that attenuates UV through absorption, scattering, and reflection, with performance shaped by particle size, coating, and dispersion quality. Sunscreen use commonly falls around 5% to 25%, and 24.7% sits near the U.S. OTC monograph maximum of 25%; it is pH-stable in typical emulsions but can thicken, agglomerate, or interact with charged polymers if not well dispersed.
Last updated 2026-05-13