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
L’Oréal
Shampooing 2 en 1
400ml · Label from France · Lists fragrance, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Shampooing 2 en 1 au lait de vanille et pulpe de papaye
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Shampooing à l’extrait de tilleul
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Shampooing à la camomille et miel de fleurs
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
Cora
Shampooing Amande douce
500 ml · Label from France · Lists fragrance, sulfates, coconut derivatives
Axe
Shampooing anarchy
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire + après-shampooing 2 in 1 anti-chute
270ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Anti-démangeaisons
280 ml · Label from France · Lists fragrance, fragrance allergens, essential oils, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Apple Fresh
280 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Extra Volume
280 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Instant Apaisement
450 ml · Label from France · Lists fragrance, fragrance allergens, essential oils, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Instant Dry Scalp Care
270 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Instant Relief Apaisement
270 ml · Label from France · Lists fragrance, fragrance allergens, essential oils, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Lisse & Soyeux
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Lisse & Soyeux (maxi pack)
700 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire NatureFusion Soin Nourrissant
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire sensitive Head and Shoulders
500 ml · Label from France · Lists fragrance allergens, drying alcohol, sulfates, silicones, coconut derivatives
Timotei
Shampooing Blond Lumière - Timotei
750 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
Head & Shoulders
Shampooing Classic 2en1 Anti-Pellicullaire
300 ml · Label from Belgium and France · Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
Auchan
Shampooing douche Men Boost 3 en 1
250 ml · Label from France · Lists fragrance, sulfates, coconut derivatives
Cora
Shampooing douche Relax
250 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cora
Shampooing doux Cheveux chatains à bruns Noix & Henné
250 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cora
Shampooing Doux cheveux normaux Pomme & tilleul
250 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
L’Oréal
Shampooing doux protecteur cheveux fins et délicats
750ml · Label from France · Ingredients incomplete, can’t check
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