Threonine
Threonine is a hair conditioning and hair waving or straightening ingredient. It’s in 92 products on Poliage, most often conditioner, serum and moisturizer. Avoid lists on Poliage that include it: none.
Updated October 22, 2026
In plain English
Threonine: used to make hair smoother and easier to comb. Also used in hair-waving and straightening products.
What it does
Contains Threonine: antistatic
Function listed in CosIng
Contains Threonine: hair-conditioning
Function listed in CosIng
Contains Threonine: hair-waving-or-straightening
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 38594, accessed October 22, 2026.
Products that contain Threonine
Pacifica
Cosmic Hemp Balancing Face Wash
Lists fragrance, coconut derivatives
Kristin Ess
Curl Conditioner
Conditioner · Lists fragrance, fragrance allergens
Kristin Ess
Curl Shampoo
Shampoo · Lists fragrance, fragrance allergens, coconut derivatives
Davines
Davines MOMO Moisturizing Shampoo
Lists fragrance, fragrance allergens, essential oils, coconut derivatives
Medicube
Deep Reviving Peptide Eye Cream
Eye cream · Lists fragrance, fragrance allergens, silicones
Skinfood
Egg White Pore Foam
Lists fragrance, drying alcohol, silicones, coconut derivatives
Eucerin
Lists exfoliating acid, sulfates, silicones
Eucerin
Eucerin, Roughness Relief Lotion, Fragrance Free
Lists exfoliating acid
Medik8
Exo-PDRN Prismatic+
Serum · Lists fragrance allergens
Moroccanoil
Frizz Shield Spray
Hair styling · Lists fragrance, fragrance allergens, exfoliating acid, silicones
R+Co
GEMSTONE Color Conditioner
Conditioner · Lists fragrance, fragrance allergens, coconut derivatives
The Ordinary
Glycolic Acid 7% Exfoliating Toner
Exfoliant · Lists exfoliating acid
Versed
Good Defense Daily Sunscreen SPF 50 PA++++
Sunscreen · Lists chemical UV filters
Naturopathica
Gotu Kola + Fruit Exosome Toner
Toner · Lists coconut derivatives
Herbivore
GREEN MAGIC Centella + Ceramides Soothing Face Serum
Serum · Lists drying alcohol, essential oils, coconut derivatives
Vegamour
GRO Revitalizing Shampoo
Shampoo · Lists fragrance, fragrance allergens, essential oils, coconut derivatives
Vegamour
GRO+ Advanced Balancing Conditioner
Conditioner · Lists fragrance, fragrance allergens, exfoliating acid, coconut derivatives
Vegamour
HYDR-8 Leave-In Conditioner
Conditioner · Lists fragrance, fragrance allergens, exfoliating acid, coconut derivatives
CeraVe
Hydrating cream-to-foam cleanser
Lists exfoliating acid, salicylic acid, coconut derivatives
CeraVe
Hyrdrating Cream To Foam Cleanser
Lists exfoliating acid, salicylic acid, coconut derivatives
Juvia’s Place
I am My Skin Foundation Sticks
Foundation · Lists silicones
Ouai
Leave In Conditioner Melrose Place
Conditioner · Lists fragrance, fragrance allergens, silicones
Ouai
Leave in Conditioner North Bondi
Conditioner · Lists fragrance, fragrance allergens, essential oils, silicones
Ouai
Leave In Conditioner St Barts Scent
Conditioner · Lists fragrance, fragrance allergens, essential oils, silicones
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