Aluminum Chlorohydrate
The active in antiperspirants. It forms temporary plugs in sweat-gland ducts and cuts perspiration. Marketing scares people with a link to breast cancer and Alzheimer's, but that link never held up: the American Cancer Society and the Alzheimer's Association both call it unproven. Some people get underarm irritation.
Evidence by route
Topical application
Works as an antiperspirant by blocking sweat-gland ducts. Large reviews found no link to breast cancer or neurodegeneration. The American Cancer Society and Alzheimer's Association treat the fears as unproven. Irritation can follow application to freshly shaved skin.
- CIR Cosmetic Ingredient Review safety assessment
- American Cancer Society statement on antiperspirants
- Alzheimer's Association myths page
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Medium
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
- Use with caution
- Sensitive
Frequently asked questions
Is Aluminum Chlorohydrate safe during pregnancy?
Aluminum Chlorohydrate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Aluminum Chlorohydrate for?
Aluminum Chlorohydrate suits: normal, dry, combination, oily, sensitive. Use with caution in: sensitive.
Can Aluminum Chlorohydrate irritate the skin?
Aluminum Chlorohydrate has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.
What is Aluminum Chlorohydrate and what does it do in cosmetics?
The active in antiperspirants.
What's the INCI name for Aluminum Chlorohydrate?
The INCI name is Aluminum Chlorohydrate. It may also appear as: Aluminium Chlorohydrate, ACH.
See Aluminum Chlorohydrate in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
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