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
Cosmia
Cosmia gel douche et bain lait hydratant a la peche
Lists fragrance, sulfates, coconut derivatives
Cosmia
Cosmia gel douche et bain lait hydratant a la rose - flacon avec pompe
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
Cosmia gel douche et bain lait hydratant a la vanille
Lists fragrance, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a l’amande douce
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a la fleur d’oranger pour adultes et enfants de plus de 3 ans en flacon
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a la fleur de coton - flacon avec capsule
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a la mandarine et au citron
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a la noix de coco
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a la peche
Lists fragrance, sulfates, coconut derivatives
Cosmia
Cosmia gel douche lait hydratant a la vanille
Lists fragrance, sulfates, coconut derivatives
Cosmia
Cosmia pure soin matifiant
Lists fragrance
Johnson’s
cottontouch newborn wash & shampoo
Lists fragrance, coconut derivatives
Unilever
Couleur Eclat
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
country Apple lotion
Lists fragrance, fragrance allergens, parabens, silicones, formaldehyde releasers
Deliplus
Cream with olive oil
Lists fragrance, fragrance allergens, silicones
Aveeno
Creamy oil moisturizer
Lists fragrance, parabens, silicones, formaldehyde releasers
ADVANCED CLINICALS
CREEPY SKIN - WRINKLE SMOOTHENING CREAM
None of Poliage’s flag groups listed
Nivea
Crema Corpo Idratante Express
Lists fragrance, fragrance allergens, drying alcohol, sulfates, silicones
Nivea
Crema corporal aloe refrescante
Lists fragrance, fragrance allergens, drying alcohol, silicones
Deliplus
Crema corporal reafirmante
Lists fragrance, silicones
Deliplus
Crema de manos
Lists fragrance, silicones
Deliplus
Crema facial noche aclarante
Lists fragrance, drying alcohol, silicones
Ziaja
Crema facial pepino
Lists fragrance, fragrance allergens, silicones
Deliplus
Crema olive
Lists fragrance, fragrance allergens
Related guides
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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.