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Ammonium Hydroxide

Ammonium hydroxide is an alkaline solution of ammonia in water. In cosmetic formulations, it is primarily used as a pH adjuster to increase the alkalinity of a product. It can also function as a denaturant in alcohol-containing products.

NonePH adjusterVeganEvidence: Medium

BenefitNone 0 / 4

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.

Systemic exposure i0.5 / 4

Whether it has meaningful potential to be absorbed into the body at levels that may matter biologically. Most cosmetic ingredients score low unless there is known concern or high exposure.

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.

Things to watch

Can be irritating to skin and eyes at higher concentrations.
Strong odor may be unpleasant.

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Products with Ammonium Hydroxide

Perl Weiss

White & Charcoal

3.6/ 51/13/7

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