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Lysine

What Lysine is & what it does

An amino acid used as a humectant and conditioning agent that hydrates and supports the skin's moisture balance. It leaves a soft feel.

What does Lysine do in skincare?

Lysine is an amino acid that is commonly used as a skin-conditioning and humectant ingredient. It can help the skin feel smooth and hydrated and is sometimes included as a building block that supports the formula's overall conditioning profile.

Is Lysine safe?

Lysine is an amino acid that occurs naturally in the body and in many proteins, and it is generally considered well tolerated when used in cosmetics. It is used at small levels and is not typically associated with irritation for most people.

Is Lysine vegan?

The lysine used in cosmetics is often produced by fermentation of plant-based sugars, which makes it commonly suitable for vegan formulas. Since production methods can vary, anyone who strictly avoids animal-derived inputs may want to confirm the source with the brand.

Sunscreens with Lysine

We rate 67 sunscreens that contain it, showing the top 10 by overall score:

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