CI 77891 white pearlescent powder

This white inorganic mineral pigment is produced by purifying and processing titanium raw material. In cosmetics, it provides coverage, brightness and a pearlescent or opacifying effect. Certain grades and particle sizes are also used as a mineral UV filter. Its function depends on its surface treatment, crystal form and particle size.

CI 77891 white pearlescent powder scatters light, reduces the transparency of a formulation and visually smooths unevenness. When approved and formulated as a UV filter, it helps reflect and absorb UV radiation. However, the presence of the pigment alone does not mean that a product has a sun protection factor. In make-up, its main role is to provide colour, coverage and light effects.

In finished creams and foundations, it is suitable for most skin types, including sensitive skin. Mineral pigments are often also well tolerated by acne-prone skin, provided the entire base is non-comedogenic. With loose powder products, it is important not to inhale the fine powder. Only a tested finished product should be used on damaged or severely irritated skin.

Skin penetration studies show that titanium dioxide particles from sunscreens remain mainly on the surface and in the stratum corneum, and do not penetrate healthy skin into the living layers to any significant extent (International Journal of Environmental Research and Public Health, 2015). This safety assessment applies to use on the skin, not to inhalation of fine aerosols or powders.

The amount used depends on the coverage required and the type of product. For UV protection, only material that meets the requirements for a UV filter is used, and the final product must undergo its own SPF and UVA testing. Thorough dispersion and measures to protect workers from dust exposure are essential during production.

With colouring ingredients, it is important to distinguish between optical effects and biological effects. They can instantly even out or correct the appearance of the skin, but do not address the cause of redness, pigmentation or inflammation. The final shade is always assessed in the finished base and on several skin tones. Development should also include checks for colour migration, transfer and light stability.