Active: Titanium Dioxide 4.2%. Inactive: Water/Aqua/Eau ●
TL;DR. This ingredient is an inorganic UV filter that helps protect skin by reflecting and scattering UVB and part of the UVA spectrum. In this listing, it is present at a relatively low active level, so the final SPF depends heavily on dispersion quality and the rest of the formula.
What does Active: Titanium Dioxide 4.2%. Inactive: Water/Aqua/Eau do in a cosmetic formula?
This ingredient is an inorganic UV filter that helps protect skin by reflecting and scattering UVB and part of the UVA spectrum. In this listing, it is present at a relatively low active level, so the final SPF depends heavily on dispersion quality and the rest of the formula.
Is Active: Titanium Dioxide 4.2%. Inactive: Water/Aqua/Eau clean?
Clean-beauty frameworks generally accept this ingredient in lotions and creams, especially when it is well dispersed and surface-treated for stability. The main points of scrutiny are particle size, inhalation exposure in loose powders or sprays, and photocatalytic activity if the particles are not properly coated.
Is Active: Titanium Dioxide 4.2%. Inactive: Water/Aqua/Eau sustainable?
This material is mineral-derived and does not biodegrade, but it is also not a petroleum-based organic UV filter. Sustainability questions are mainly tied to mining, energy-intensive refining, particle release, and wastewater capture during manufacturing.
Is Active: Titanium Dioxide 4.2%. Inactive: Water/Aqua/Eau COSMOS-approved?
It is generally compatible with COSMOS-natural and COSMOS-organic products when it meets the standard’s mineral, purity, and particle-size requirements. From a Green Chemistry view, it scores well for low skin reactivity and photostability, but less well for nonrenewable sourcing and lack of biodegradability.
How does Active: Titanium Dioxide 4.2%. Inactive: Water/Aqua/Eau work chemically?
The molecule is an insoluble inorganic oxide used as fine particles, often surface-treated with materials such as silica, alumina, or fatty acids to improve dispersion and reduce photocatalytic reactivity. In sunscreens, active levels commonly range from about 2% to 25%, with performance shaped by particle size, coating, film uniformity, and compatibility with thickeners and dispersants.
Last updated 2026-05-16