CLAY WHITE (KAOLIN)

White Clay (Kaolin): What It Is, Uses and Bulk Supply for Cosmetics

White clay, commonly known as kaolin, is one of the most widely used mineral raw materials in cosmetic formulation and artisanal soap making. Its mild texture, neutral colour and absorbent character make it a workhorse ingredient for masks, powders, soaps and decorative cosmetics. For cosmetic laboratories, indie brands and soap makers working under EU regulations, sourcing a clean, well-documented kaolin in bulk is a baseline requirement. In this guide we explain what kaolin is, how it differs from other cosmetic clays, its main uses, the parameters to consider when sourcing it, and how Royal Bio supplies white clay in bulk to professional customers across Europe.

What is white clay (kaolin)?

White clay, also known as kaolin, is a mineral mainly composed of hydrated aluminum silicates. It is characterized by its white colour and its soft, silky texture, which together make it instantly recognisable on the formulation bench.

Kaolin belongs to the family of cosmetic clays widely used by laboratories, indie brands and soap makers. Among the different cosmetic clays available on the market, kaolin is one of the gentlest in terms of texture, which is part of the reason it has become a default choice for products designed for everyday use.

From a regulatory standpoint, kaolin is a standard mineral raw material accepted in cosmetic formulation across the EU, with INCI nomenclature recognised in international ingredient databases. Cosmetic manufacturers reference it routinely in masks, powders and soap formulas.

Kaolin vs other cosmetic clays

The cosmetic clay market includes several mineral categories that are sometimes confused. White clay (kaolin) is distinguished from other clays such as green clay, red clay or pink clay by its colour, its texture and its mineral composition.

Kaolin is the mildest in feel of the common cosmetic clays. Its soft, silky texture and neutral white colour make it especially suitable for masks intended for sensitive applications, for translucent powders and for soaps where a clean white base is the design goal.

Other clays in the cosmetic toolbox have stronger colours and a more pronounced texture, which formulators select when they want a more visible, more textured product. Choosing between kaolin and another cosmetic clay is therefore both a technical decision (texture, absorbent profile) and a design decision (colour, sensorial character).

Main uses of kaolin in cosmetics

Facial masks. Kaolin is widely used in the cosmetic industry due to its absorbent and purifying properties, such as the removal of impurities and the control of sebum production. Cream masks, powder masks and ready-to-mix powder bases for masks frequently include kaolin as the main mineral phase.

Soap making. Artisanal soap makers use kaolin to give their bars a silky feel, a stable white base colour and a finer texture during cold process saponification. It is one of the most versatile additives in soap formulation and integrates well with both vegetable and palm-free oil bases.

Powders and decorative cosmetics. Kaolin is one of the standard mineral fillers in face powders, body powders, dry shampoos and decorative cosmetics where a neutral white base, a smooth feel and an absorbent capacity are required.

Deodorants and roll-on formulations. Kaolin is incorporated into natural deodorant formulas as an absorbent mineral that helps manage moisture in stick, cream or powder formats, often combined with other natural raw materials.

CAS: 1332-58-7. EINECS: 231-748-8. INCI: Kaolin.