CI 77891 ●
TL;DR. This ingredient provides white color, opacity, and coverage in makeup, skincare, and body care. It can also function as a mineral UV filter when used and regulated for that purpose.
What does CI 77891 do in a cosmetic formula?
This ingredient provides white color, opacity, and coverage in makeup, skincare, and body care. It can also function as a mineral UV filter when used and regulated for that purpose.
Is CI 77891 clean?
Clean-beauty frameworks generally accept it, especially in creams, lotions, and pressed formats, but often apply extra scrutiny to nanoparticles and loose powders that can be inhaled. Purity and heavy-metal specifications matter because it is a mined mineral material.
Is CI 77891 sustainable?
This material is mineral-derived, so it is not renewable and depends on mining and mineral processing. It is inorganic and does not biodegrade in the usual organic sense, but it is generally not considered bioaccumulative.
Is CI 77891 COSMOS-approved?
It is permitted under COSMOS natural and organic standards as an approved mineral colorant or UV filter when purity, particle-size, labeling, and use-condition requirements are met. From a Green Chemistry view, it scores well for stability and low reactivity, but less well for renewability and end-of-life biodegradation.
How does CI 77891 work chemically?
The molecule is an inorganic metal oxide with a high refractive index, which explains its strong whitening, opacity, and UV-scattering performance. It is typically used below 1% for subtle opacity, several percent for coverage, and up to about 25% when used as a regulated mineral UV filter, with surface coatings often used to improve dispersion and reduce photocatalytic activity.
Last updated 2026-05-13