Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,058 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 21, 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
Essence
DOUBLE TROUBLE MASCARA
Mascara · None of Poliage’s flag groups listed
L’Oréal
Douche 3 en 1 corps-visage-cheveux Agrumes verts
Lists fragrance, fragrance allergens, exfoliating acid, essential oils, sulfates, salicylic acid, coconut derivatives
Cosmia
DOUCHE SHAMPOING BAIN MOUSSANT MANGUE et ANANAS
Lists fragrance, sulfates, coconut derivatives
Cosmia
DOUCHE SHAMPOING BAIN MOUSSANT POMME et POIRE
Lists fragrance, sulfates, coconut derivatives
Unilever
Dove
Lists fragrance, fragrance allergens, coconut derivatives
unilever
Dove bille bio arb 50ml
Lists fragrance, fragrance allergens
Unilever
Dove bille bio euca 50ml
Lists fragrance, fragrance allergens
Unilever
Dove bille bio ging 50ml
Lists fragrance, fragrance allergens
Unilever
Dove deo bio pdp bil eucx2
Lists fragrance, fragrance allergens
Unilever
Dove deo bio pdp bil ginx2
Lists fragrance, fragrance allergens
Unilever
Dove deo bio pdp the2x50
Lists fragrance, fragrance allergens
Unilever
DOVE Déodorant Femme Stick Original 0% 2x40ml
Lists fragrance, fragrance allergens, sulfates
Unilever
Dove Douche Soin Hypoallergénique pour Peau Sensible 400ml
Lists coconut derivatives
Unilever
Dove Gel Douche Amande et Hibiscus
Lists fragrance, fragrance allergens, formaldehyde releasers, coconut derivatives
Unilever
Dove Gel Douche Eau Micellaire Peau Sensible 400ml Lot de 2
Lists fragrance, coconut derivatives
Unilever
Dove Gel Douche Homme Hydratant
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Unilever
Dove Gel Douche Hydratant Lot 2 x 750ml
Lists fragrance, fragrance allergens, coconut derivatives
Unilever
DOVE Gel Douche Hypoallergénique 2x400ml
Lists coconut derivatives
Unilever
Dove Gel Douche Mousse Soin Caresse
Lists fragrance, fragrance allergens, coconut derivatives
Unilever
Dove Gel Douche Nutrition Intense 400ml Lot de 2
Lists fragrance, fragrance allergens, coconut derivatives
Unilever
Dove Gel Douche Nutrition Intense 750ml Lot de 2
Lists fragrance, fragrance allergens, coconut derivatives
Unilever
DOVE Gel Douche Pouvoir des Plantes Eucalyptus 250ml
Lists fragrance, fragrance allergens, essential oils, coconut derivatives
Unilever
DOVE Gel Douche Pouvoir des Plantes Eucalyptus 2x250ml
Lists fragrance, fragrance allergens, essential oils, coconut derivatives
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.