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Official CosIng Information


A branch-chained, essential amino acid that can be found in things like almond, cashew or soy protein. When taken orally it may promote protein synthesis. As for skincare - like all the amino acids - it's a skin-identical ingredient and moisturizer. It also seems to be useful as a barrier repair ingredient.  

Show me some proof

  • Pediatric Allergy and Immunology, Volume 25, Issue 3, 13 JAN 2014, Local rhamnosoft, ceramides and L-isoleucine in atopic eczema: a randomized, placebo controlled trial

Products with Isoleucine

Peter Thomas Roth Unisex Neuroliquid Volufill Youth Serum The Ordinary Marine Hyaluronics Anastasia Beverly Hills Eye Primer Kikumasamune Skin Care Essence Pacifica Cosmic Hemp Balancing Face Wash Esho Drench The Ordinary Natural Moisturizing Factors + Ha Umoua Advanced Extraction Isosmotic Tech Amino Acid Lotion Ausceuticals Peptide Moisturiser Brickell Men's Products Daily Strengthening Shampoo For Men Brickell Men's Products Reviving Day Serum For Men Leaders Insolution Mediu Amino Pore-Tight Mask Abnomaly Petrowhat? Bali Abnomaly Petrowhat? Baobab Abnomaly Petrowhat? Milk Abnomaly Petrowhat? Rio Holifrog Tashmoo Water Lily Nourishing Milky Wash Holifrog Tashmoo Water Lily Nourishing Milky Wash The Ordinary Amino Acids + B5 Algenist Genius Ultimate Anti-Aging Foaming Cleanser The Ordinary Glycolic Acid 7% Toning Solution Leaders Mediu Amino Mousture Mask Loopha Broadleaf Forest Body Wash The Ordinary Buffet Anastasia Beverly Hills Luminous Foundation Gin Amber Beauty Natural Peptide Serum Nacific Glow Intensive Bubble Toner Rilastil Stretch Marks Cream The Ordinary Buffet + Copper Peptides 1% 2Sol Cica Youth Toner Aqulabo Mask Boosting Jelly Mist Hello Nature Cannabis Oil Shampoo Leaders Amino Lifting Mask Malie Snail Ultra Hydrating Essence Mask Zelens Z Balance Prebiotic & Probiotic Facial Mist Equal Beauty Super Serum Hydrantioxidant™ Stemm High-Amino Shampoo Granado Espuma Regeneradora De Limpeza NIOD Survival 0 Ouai Leave-In Conditioner Drunk Elephant Protini™ Polypeptide Cream Babe Lash Essential Serum Elemis Absolute Eye Serum Kat Burki Form Control Marine Collagen Gel NIOD Multi-Molecular Hyaluronic Complex 2 (MMHC2) Nu Skin Nutricentials Moisture Restore Intense Moisturiser Paula's Choice Peptide Booster Summer Fridays Super Amino Gel Cleanser Ausceuticals Peptide Moisturizer (Reformulated) Jung Saem Mool Minifying Boosting Toner