Arginine

Arginine is a basic amino acid occurring in proteins and used in cosmetics as a water-soluble component. It binds moisture, conditions skin, and adjusts pH in formulas aiming for a supple feel and comfortable hydration.
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Ingredient Snapshot

Overview
An amino acid that draws in moisture for softer, plumper skin.
Category
Hydration, Barrier Support, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Great

Comedogenic Risk

None

Skin Benefits

Attracts and holds water to give skin a plumper, more comfortable feel. Supports a balanced environment for improved softness.

Uses In Skincare & Cosmetics

Formulated into hydrating serums, essences, and toners to boost moisture levels. Also common in gels, creams, and sheet masks to improve skin smoothness.

Comedogenic Rating

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

Safety

Generally safe with low likelihood of irritation at cosmetic levels. Very concentrated formulas may cause transient stinging on compromised skin; patch testing can help assess tolerance.

Is Arginine a Good Ingredient?

This rates Great: A well-tolerated amino acid humectant and pH adjuster that supports hydration with low irritation potential. Its stability and broad adoption make it a reliable, gentle addition to many formulas.

Products with Arginine

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