How does aluminum sesquichlorohydrate work?

It works by forming a temporary physical plug in the sweat ducts, which reduces the amount of sweat released onto the skin. This helps to keep the underarms dry and control odor.

Is aluminum sesquichlorohydrate safe to use?

Regulatory bodies worldwide consider aluminum sesquichlorohydrate safe for use in antiperspirants at approved concentrations. Concerns about systemic absorption and health risks are not supported by current scientific evidence.

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Aluminum Sesquichlorohydrate

Aluminum sesquichlorohydrate is an aluminum salt commonly used in antiperspirant products. It works by forming a temporary plug in the sweat ducts, reducing the amount of sweat that reaches the skin's surface. This ingredient is effective at controlling underarm wetness and odor.

NoneAntiperspirant activeVeganEvidence: High

BenefitStrong 3.5 / 4

Oil control i3.5 / 4

Whether it can reduce excess sebum, shine, or greasiness — absorbents, sebum-regulating ingredients, and some acne actives.

RiskModerate 1.5 / 4

Irritation i1.5 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Sensitization i0.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

Reduces underarm wetness
Controls body odor

Things to watch

May cause skin irritation or itching in some individuals
Can stain clothing

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Frequently asked questions

How does aluminum sesquichlorohydrate work?: It works by forming a temporary physical plug in the sweat ducts, which reduces the amount of sweat released onto the skin. This helps to keep the underarms dry and control odor.
Is aluminum sesquichlorohydrate safe to use?: Regulatory bodies worldwide consider aluminum sesquichlorohydrate safe for use in antiperspirants at approved concentrations. Concerns about systemic absorption and health risks are not supported by current scientific evidence.