Titanium Dioxide CI 77891 ●
TL;DR. It primarily provides white opacity and coverage as a pigment, and in sunscreens it also serves as a physical UV filter that scatters and absorbs UV light.
What does Titanium Dioxide CI 77891 do in a cosmetic formula?
It primarily provides white opacity and coverage as a pigment, and in sunscreens it also serves as a physical UV filter that scatters and absorbs UV light.
Is Titanium Dioxide CI 77891 clean?
Clean-beauty frameworks generally accept it, especially in lotions and creams, because it is low-sensitizing and not a common allergen. The main scrutiny is for inhalable loose powders or sprays and for nano forms, where labeling and format matter.
Is Titanium Dioxide CI 77891 sustainable?
This material comes from mineral ores and is refined into high-purity pigment or sunscreen grades, so its footprint is tied to mining, purification, and waste management. It does not biodegrade, but it is an inert mineral particulate rather than a persistent organic pollutant.
Is Titanium Dioxide CI 77891 COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic as an allowed mineral-derived ingredient, including UV-filter uses where local regulations allow. Its Green Chemistry fit is mixed: it is abundant and highly stable, but it is mined, energy-intensive to refine, and not biodegradable in the organic-chemistry sense.
How does Titanium Dioxide CI 77891 work chemically?
It is an insoluble inorganic crystalline oxide used as pigment-grade or micronized particles, with surface coatings often added to improve dispersion and reduce photocatalytic reactivity. Regulatory sunscreen limits commonly reach 25%, while pigment use varies widely by product type, and it remains stable across typical cosmetic pH ranges.
Last updated 2026-05-13