Calcium Hydroxymethionine

Calcium hydroxymethionine is a calcium-amino acid complex used in topical cosmetics. It's added for mild moisture binding and conditioning, and to improve formula aesthetics in lightweight lotions, gels, and leave-on serums.
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Ingredient Snapshot

Overview
A mineral-amino acid blend offering mild hydration.
Category
Hydration, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Offers light hydration that can make skin feel more supple; evidence for standout effects is limited, so results may be modest.

Uses In Skincare & Cosmetics

Used in leave-on formats such as serums, gels, and lightweight creams aimed at everyday hydration.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Safety data in cosmetics are limited, but it's usually tolerated at low levels. Introduce slowly and discontinue if redness or burning occurs; no notable regulatory limits are widely recognized.

Is Calcium Hydroxymethionine a Good Ingredient?

Evidence for noteworthy topical benefits is limited, so effects are likely modest, which is why it's rated Fair. Mild irritation is possible for sensitive skin, so proceed cautiously.