Humectant ·

Moderate evidence

Glycerin

What is it?

Glycerin (glycerol) is a naturally occurring humectant widely used across skincare products for its ability to draw and retain moisture in the skin.

What does it do?

Commonly used as a humectant to increase skin hydration and support barrier function; a randomized crossover trial found glycerin-based moisturizers effective for secondary prevention of occupational hand dermatitis, and it is considered a foundational, well-established emollient/humectant ingredient in dermatologic literature.

Who may benefit?

  • May help with: Dehydration

How to use

Typically formulated at 2%-10%.

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Sources

Important disclaimer

This page provides general skincare information and is not medical advice, diagnosis or treatment. Ingredient interactions and evidence summaries reflect published, cited sources — not a personal assessment of your skin. For medical skin conditions, rashes, pregnancy/lactation questions or persistent concerns, please consult a licensed dermatologist or HPCSA-registered practitioner.