Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,157 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 26, 2026
In plain English
Lye. Used in small amounts to adjust pH, or to turn fats into soap.
What it does
Contains Sodium Hydroxide: buffering
Function listed in CosIng
Contains Sodium Hydroxide: denaturant
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 37890, accessed October 22, 2026. Also listed as natrii hydroxidum.
Products that contain Sodium Hydroxide
Timotei
Timotei Nutrition Intense Shampoing Femme à l’Huile d’Avocat 100% d’origine naturelle Cheveux Secs Lot de 6x300ml
1800 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, coconut derivatives
Timotei
timotei pure shampoo green tea extract
300ml · Label from United Kingdom · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei sh illum 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei sh nrst 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Timotei
Timotei sh pure 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Shampoing à l’Huile d’Argan Bio Cheveux très Abimés
300 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
Timotei
Timotei Shampoing Huiles Précieuses 300ml Lot de 2
600 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Timotei
Timotei Shampoing Huiles Précieuses 300ml Lot de 6(4+2 Offerts)
1800 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Timotei
Timotei Shampoing Richesse Suprême
300 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, coconut derivatives
Timotei
Timotei Shampooing 2 en 1 Douceur 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Timotei
Timotei Shampooing 2 en 1 Nourrissant 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Timotei
Timotei Shampooing 2en1 Purifiant 250ml
250 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Shampooing Detox 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Shampooing Éclat 300ml
300 ml · Label from France · Lists fragrance, fragrance allergens, coconut derivatives
Timotei
Timotei Shampooing Femme Huiles Précieuses 2x300ml
600 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Shampooing Femme Hydratant 2x300ml
600 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Shampooing Femme Illuminant 2x300ml
600 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Shampooing Purifiant 750ml
750 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Tío Nacho
Tío Nacho Anti-Caida Engrosador
415 ml · Lists fragrance, fragrance allergens, sulfates, parabens, coconut derivatives
StriVectin
TL Advanced Tightening Neck Cream PLUS
Lists fragrance, fragrance allergens, exfoliating acid, silicones
La Roche-Posay
Toleriane Double Repair Face Moisturizer UV SPF 30
Lists silicones, chemical UV filters
La Roche-Posay
Toleriane Purifying Foaming Cleanser
Lists coconut derivatives
La Roche-Posay
TOLERIANE SENSITIVE RICHE
40ml · Label from France and Morocco · Ingredients incomplete, can’t check
La Roche-Posay
Toleriane Ultra - Peaux ultra sensibles ou allergiques
40ml · Label from France · Lists silicones
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