Question 1

What does Active Ingredients: Zinc Oxide 20% Inactive Ingredients: Water/Aqua do in a cosmetic formula?

Accepted Answer

This ingredient is used as a mineral UV filter, forming an opaque particle layer that reflects, scatters, and absorbs UV radiation. At 20%, it can support high broad-spectrum sunscreen protection when properly dispersed.

Question 2

Is Active Ingredients: Zinc Oxide 20% Inactive Ingredients: Water/Aqua clean?

Accepted Answer

This ingredient is widely accepted in clean-beauty frameworks because it is non-fragrance, generally low-irritation, and has a long safety record in topical use. Main scrutiny focuses on particle size, coatings, trace metal specifications, and inhalation exposure in loose powders or sprays.

Question 3

Is Active Ingredients: Zinc Oxide 20% Inactive Ingredients: Water/Aqua sustainable?

Accepted Answer

This material is mineral-derived and nonrenewable, and it does not biodegrade because it is inorganic. Environmental discussion centers on particle persistence and aquatic exposure, especially for very small particles and rinse-off formats.

Question 4

Is Active Ingredients: Zinc Oxide 20% Inactive Ingredients: Water/Aqua COSMOS-approved?

Accepted Answer

It is generally compatible with COSMOS-natural and COSMOS-organic products when it meets the standard’s requirements for mineral ingredients, processing, and particle form. From a Green Chemistry view, it scores well for topical stability and low reactivity, but less strongly on renewable sourcing and biodegradability.

Question 5

How does Active Ingredients: Zinc Oxide 20% Inactive Ingredients: Water/Aqua work chemically?

Accepted Answer

The molecule is an inorganic, amphoteric metal oxide used as micronized or coated particles that require strong dispersion control to prevent settling, whitening, and uneven UV coverage. It is photostable across normal cosmetic pH ranges and is commonly used around 5% to 25% in regulated sunscreen products, depending on the target protection level and local rules.