Lysine

INCI: LYSINE

CAS Number
56-87-1 (L-Lysine)
Function
Hair conditioning, skin conditioning, antistatic
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes GRAS (Generally Recognized as Safe) for food use; permitted in cosmetics under 21 CFR 182/184

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Endogenous amino acid with excellent safety profile. Confirm origin for COSMOS/ECOCERT compliance. Hygroscopic; ensure formulation stability.

โš ๏ธ
Concern Level: Low

Frequently Asked Questions

Is Lysine safe in cosmetics?

Endogenous amino acid with excellent safety profile. Confirm origin for COSMOS/ECOCERT compliance. Hygroscopic; ensure formulation stability. The EU classifies Lysine as "permitted". Safety rating: EXCELLENT.

Is Lysine allowed in the EU?

Lysine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Lysine do in cosmetics?

Lysine functions as: Hair conditioning, skin conditioning, antistatic. It is classified as a cosmetic ingredient in our database. CAS number: 56-87-1 (L-Lysine).

What is the Margin of Safety for Lysine?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

๐Ÿ“ฑ

Is Lysine in Your Products?

Scan any product label with Piro โ€” our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free โ†’

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Lysine in your formulation.