What does Lysine hcl do?

Used in cosmetics as a skin-conditioning agent and a hair conditioner.

Low concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

beauty

Lysine hcl

CAS 657-27-2 · 0/100 · High conf.

Also registered as 2 other CAS numbers

10098-89-2 · 22834-80-6

Concern score

0/100Low concern — well-established and permitted without restriction (CIR safe as used).

High confidence

Lysine hcl in plain language

What it is: Also known as Lysine hydrochloride
What it does: Used in cosmetics as a skin-conditioning agent and a hair conditioner.
Skin conditioning
Hair conditioning
Antioxidant
Conditioner
Is it a concern?: Low concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 10 composition records across product categories including Personal care.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Lysine hcl appears in these published regulatory listings.

Recorded in these product areas

Found in consumer products
Beauty

EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 10 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Antioxidant, Softener and conditioner, Reducing agent.
- EPA CPDat observed this chemical in 10 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Antioxidant, Softener and conditioner, Reducing agent.Source →

Expert safety opinions

No expert opinion on file for Lysine hcl. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Lysine hcl yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

2 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EPA Chemical and Products Database
exposure · updated July 2016
Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Lysine hcl in a product composition. These are source records, not Greenveil catalog products.

Source records

Named organisations

Personal care

Typical roles

Skin conditioningHair conditioningAntioxidantConditioner

See products using Lysine hcl →

Catalog

Found in these products

Cosmetic and personal-care products that list Lysine hcl are shown first. Their ingredient lists include Lysine hcl; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 25 →Find products without it →