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Lysine Hcl

What Lysine Hcl is & what it does

Lysine HCl is the hydrochloride salt of lysine, an amino acid, used in cosmetics as a skin-conditioning ingredient. In skincare and sunscreen formulas it can act as a humectant-style component that helps support the skin's surface and the formula's feel. It typically appears at low concentrations as a supporting ingredient.

Is Lysine HCl safe?

Lysine HCl is the salt form of the amino acid lysine and is generally considered safe for use in cosmetics. It is used at low levels as a conditioning ingredient and is not associated with significant concerns in topical products. As always, sensitive skin can patch test a new product.

What does Lysine HCl do in skincare?

It is used as a skin-conditioning ingredient and can act as a humectant-style component that helps support the skin's surface and the formula's feel. In sunscreens and skincare it typically appears at low concentrations. It is a supporting ingredient rather than an active.

Is Lysine HCl natural or synthetic?

Lysine is an amino acid that occurs in nature, and the HCl form used in cosmetics is typically produced through fermentation or synthesis and then processed into a stable salt. The result is a purified, manufactured ingredient based on a naturally occurring building block.

Sunscreens with Lysine Hcl

We rate 13 sunscreens that contain it, showing the top 10 by overall score:

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