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