Is this alum stone deodorant suitable for sensitive or acne-prone skin?

The deodorant contains potassium alum, which can act as an astringent, but it also includes cyclopentasiloxane, isopropyl myristate and fragrance, ingredients that may clog pores or cause irritation on very sensitive or acne-prone skin; a patch test is recommended before full use.

What does potassium alum do in this deodorant and how does it help control odor?

Potassium alum is a mineral salt that forms a thin crystalline layer on the skin, reducing bacterial growth that causes body odor while providing a dry finish without the heavy aluminum chlorohydrate used in many antiperspirants.

Are the propellants and fragrance safe to use, and what precautions should be taken when spraying?

The product is propelled by butane, isobutane and propane, which are highly flammable; it should be applied away from sparks, open flames and hot surfaces, and the aerosol should be stored in a cool, well-ventilated place while the fragrance may trigger reactions in fragrance-sensitive individuals.

Cora • 200 ml

Déodorant Pierre d'Alun 24h

Hygiene

Product Insights

The 24-hour alum stone deodorant comes in a 200 ml aerosol can and uses potassium alum, cyclopentasiloxane, and isopropyl myristate to provide a dry, anti-mark finish. Its formula includes flammable propellants (butane, isobutane, propane) and a fragrance, which may irritate very sensitive skin or cause allergic reactions in fragrance-sensitive individuals. All listed ingredients are vegan-compatible, and the product is marketed as anti-trace and long-lasting, but users should handle it away from open flames and test for skin tolerance.

Comparative Analysis

Positioned as a 24-hour anti-trace spray, this alum-based deodorant targets consumers who want a quick-dry mineral finish while accepting the trade-off of flammable propellants and added fragrance.

Ingredients

BUTANE, ISOBUTANE, PROPANE, CYCLOPENTASILOXANE, ISOPROPYL MYRISTATE, POTASSIUM ALUM, TRIETHYL CITRATE, PARFUM, DISTEARDIMONIUM HECTORITE, PROPYLENE CARBONATE, AQUA.

84%

35%

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Frequently Asked Questions

Everything you need to know about Déodorant Pierre d'Alun 24h.

Unilever, Rexona

200 ml