Researched by Helena DeMaria-Williams
Formula IngredientAmino AcidArginine
INCI: Arginine
Arginine is a semi-essential amino acid that is one of the primary building blocks of hair keratin and skin collagen. It is a component of the skin's Natural Moisturizing Factor (NMF) and works as a skin-conditioning agent, drawing moisture to the skin's surface. Its positive charge (cationic) allows it to form protective films on negatively charged skin and hair surfaces, enhancing conditioning and moisture retention.
Category
Amino Acid
Irritation Risk
Low
Skin Types
all skin types, dry, dehydrated, sensitive, mature, acne-prone
What does this do in a formula?
moisturisation, skin conditioning, wound healing support, collagen synthesis support, hair strengthening, AHA buffering, skin barrier support
Is Arginine safe? Key considerations
Can Arginine cause irritation?
Low RiskArginine is well tolerated at typical cosmetic concentrations. No EU CosIng Annex II or III restrictions apply. It is classified as a skin-conditioning and hair-conditioning agent with no known irritation concerns at standard use levels.
Does Arginine increase sun sensitivity?
No RiskArginine does not increase photosensitivity. No sun protection precautions are required based on its presence in a formulation.
Is Arginine safe during pregnancy?
SafeArginine is a naturally occurring amino acid found in the body and in the skin's Natural Moisturizing Factor. It is widely considered safe during pregnancy at cosmetic concentrations. No reproductive or developmental concerns have been identified.
How does Arginine work?
Arginine is a semi-essential amino acid that is one of the primary building blocks of hair keratin and skin collagen. It is a component of the skin's Natural Moisturizing Factor (NMF) and works as a skin-conditioning agent, drawing moisture to the skin's surface. Its positive charge (cationic) allows it to form protective films on negatively charged skin and hair surfaces, enhancing conditioning and moisture retention.
Which products contain Arginine?
Shop products that contain Arginine
PRO Itch Prone Skin Body Wash
Hydrating Foaming Cream Cleanser
Glycolic Acid 7% Exfoliating Toner
Multi-Peptide + Copper Peptides 1% Serum
Squalane + Amino Acids Lip Balm
Natural Moisturizing Factors + HA
Natural Moisturizing Factors + PhytoCeramides
Multi-Peptide Eye Serum
Multi-Peptide + HA Serum
Natural Moisturizing Factors + Beta Glucan
Multi-Peptide Lash and Brow Serum
Natural Moisturizing Factors + Inulin Body Lotion
Marine Hyaluronics
Amino Acids + B5
