What is Alanine used for in skincare?

Alanine is an amino acid that acts as a humectant, helping the skin to attract and hold onto moisture. This contributes to better hydration and a stronger skin barrier.

Is Alanine safe for all skin types?

As a naturally occurring amino acid in the skin, alanine is generally considered safe and well-tolerated for most skin types, including sensitive skin.

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Alanine

Also known as: L-Alanine

Alanine is a non-essential amino acid that is a component of the skin's natural moisturizing factor (NMF). It helps to attract and retain moisture in the skin, contributing to hydration and maintaining a healthy skin barrier. It is generally well-tolerated and supports overall skin health.

Amino acid

BenefitModerate 2 / 4

Hydration i2.5 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

Soothing i0.5 / 4

Whether it can calm the skin — linked to less redness, irritation, discomfort, or visible reactivity.

RiskVery low 0 / 4

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

enhances skin hydration
supports skin barrier function

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Products with Alanine

Eucerin

UreaRepair PLUS 10% Urea Lotion

4.6/ 521/7/4

CeraVe

Intensive Moisturizing Lotion

4.6/ 523/19/3

The Ordinary

Rice Lipids + Ectoin Microemulsion

4.5/ 532/8/5

The Ordinary

Natural Moisturizing Factors + HA

4.4/ 529/11/6

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Frequently asked questions

What is Alanine used for in skincare?: Alanine is an amino acid that acts as a humectant, helping the skin to attract and hold onto moisture. This contributes to better hydration and a stronger skin barrier.
Is Alanine safe for all skin types?: As a naturally occurring amino acid in the skin, alanine is generally considered safe and well-tolerated for most skin types, including sensitive skin.