Stearic acid

Description

Stearic acid is a saturated fatty acid in the form of a waxy solid that provides consistency, opacity, and stability to cosmetic formulations. It is widely used as a secondary emulsifier and thickening agent in creams, lotions, solid soaps, balms, and deodorants. Its white or creamy appearance and waxy feel make it very workable in craft workshops.

INCI and technical data

INCI: Stearic Acid. Appearance: Waxy solid (flakes, beads, or powder). Melting point: ~67–70 °C. Solubility: Insoluble in water; soluble in hot oils and hot alcohol. pH in dispersion: 5.5–7.0. Approximate molecular weight ~284 g/mol.

Uses and applications

• Emulsifier and co-emulsifier to stabilize creams and lotions.
• Thickening agent to give body to textures (creams, butters).
• Opacifier in formulations to achieve a white, creamy finish.
• Technical ingredient in solid soap to improve hardness and appearance.

How to use it in recipes (guide for makers)

It is typically incorporated into the oil phase or hot to facilitate dispersion. Adjust the amount according to the desired texture: low levels to provide a light body in emulsions and higher levels when a solid or paste-like consistency is desired in balms and soaps. Always perform stability and compatibility tests on the final formula.

DIY ideas and sales in Mexico

Include it in "make your own" kits and in practical workshops for local fairs and markets. Combine it with popular Mexican vegetable oils (almond, jojoba, rosehip) and show step-by-step recipes in Spanish. Highlight the sensory benefits ("creamy texture, professional finish") on the product listing to attract small brands and entrepreneurs selling at flea markets, Etsy, or Instagram.

Precautions and compatibility

Safe for cosmetic use at normal concentrations; avoid direct contact with eyes. Do not combine with strongly alkaline materials without adjusting the pH. If irritation occurs, discontinue use. Keep the SDS and technical data sheet available to the purchaser.

Supplier and storage

AMI NATURA, SA DE CV — HazloTuBelleza
Tel: 8183403177 / 8261028506
Address: Emilio Carranza Sur 138, Centro, Monterrey, NL, Mexico.
Store in a closed container, in a cool, dry place, protected from moisture and contaminants.