Lysine HCl

Lysine HCl is the hydrochloride salt of the essential amino acid lysine, highly water-soluble for cosmetic formulations. It's used as a humectant and conditioning additive to retain moisture and refine texture, though topical support is considered limited.
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Ingredient Snapshot

Overview
A lysine salt that helps balance moisture for smoother-feeling skin.
Category
Hydration, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps maintain skin's moisture balance and leaves a smoother feel, though evidence for unique topical benefits beyond hydration is limited.

Uses In Skincare & Cosmetics

Common in hydrating toners, essences, and moisturizers to boost humectancy and improve skin feel.

Comedogenic Rating

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

Safety

Typically well tolerated with low irritation potential. As an acidic salt, it may cause brief stinging on damaged or very sensitive skin. No common regulatory restrictions noted.

Is Lysine HCl a Good Ingredient?

It's a stable, highly water-soluble amino acid salt that reliably boosts humectancy and texture, which supports a Good rating, though benefits beyond hydration are modest. Evidence for unique skin effects is limited, which keeps it short of a higher rating.

Products with Lysine HCl

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