Question 1

What does Active Ingredient: Zinc-Oxide  20% do in a cosmetic formula?

Accepted Answer

This ingredient is an inorganic UV filter and opacifying pigment, used at 20% here to provide broad-spectrum sunscreen protection. Its strongest coverage is in UVB and UVA II, with UVA I performance depending on particle design and dispersion quality.

Question 2

Is Active Ingredient: Zinc-Oxide  20% clean?

Accepted Answer

This ingredient is broadly accepted in clean-beauty standards because it is a mineral filter with low sensitization potential and no fragrance-allergen profile. Main review points are inhalation exposure in loose powders or sprays, particle size, surface coatings, and trace heavy-metal purity.

Question 3

Is Active Ingredient: Zinc-Oxide  20% sustainable?

Accepted Answer

This material is mineral-derived, typically mined and refined from ore, so its footprint is tied to extraction, energy use, and particle processing. It is not biodegradable in the organic-chemistry sense, and nanoscale or soluble fractions can affect aquatic organisms, although it is generally not considered bioaccumulative.

Question 4

Is Active Ingredient: Zinc-Oxide  20% COSMOS-approved?

Accepted Answer

It can be permitted under COSMOS-natural and COSMOS-organic when it meets the standard’s allowed mineral, UV-filter, particle-size, coating, and impurity requirements. From a Green Chemistry view, it scores well on stability and low skin reactivity, but less well on nonrenewable sourcing and lack of biodegradation.

Question 5

How does Active Ingredient: Zinc-Oxide  20% work chemically?

Accepted Answer

It is an inorganic metal oxide lattice used as micronized or nanoscale particles that scatter, reflect, and absorb ultraviolet radiation. At 20%, it is within the common over-the-counter sunscreen range and is dispersed rather than dissolved, so performance depends on particle size distribution, surface treatment, dispersion quality, and film uniformity.