Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,160 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
The Ordinary
Salicylic Acid 2% Solution
Serum · Lists exfoliating acid, salicylic acid
Thayers
Salicylic Acid BHA Toner for Acne-Prone Skin
Toner · 12 oz · Lists fragrance allergens, exfoliating acid, essential oils, salicylic acid, coconut derivatives
The INKEY List
Salicylic Acid Cleanser
Cleanser · 150ml · Lists fragrance allergens, exfoliating acid, salicylic acid, coconut derivatives
Thayers
Salicylic Acid Cleanser & Acne Face Wash
Cleanser · 4.4 oz · Lists exfoliating acid, salicylic acid, coconut derivatives
Bliss
Salicylic Acid Facial Cleanser
Cleanser · Lists exfoliating acid, essential oils, salicylic acid, coconut derivatives
Bliss
Salicylic Acid Facial Toner
Toner · Lists exfoliating acid, essential oils, salicylic acid, coconut derivatives
Naturium
Salicylic Acid Serum 2%
Serum · Lists exfoliating acid, salicylic acid
Garnier
Salicylique lotion exfoliante
120 ml · Label from France · Lists fragrance, exfoliating acid, salicylic acid
Clear
Sampoo limpieza diaria 2 en 1
400 ml · Label from Argentina · Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
up&up
Sandwich Bags
Lists fragrance, retinoid, sulfates, coconut derivatives
Head & Shoulders
Sanfte Pflege (3 Action Formula)
300 ml · Label from France · Lists fragrance, fragrance allergens, drying alcohol, sulfates, silicones, coconut derivatives
Ombia
Sanfte Pflege Handseife
500 ml · Label from Germany · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Tree Hut
Santal Haze Whipped Shea Body Butter
Body lotion · Lists fragrance, fragrance allergens, silicones
Dior
Sauvage
75g · Label from France · Lists fragrance, fragrance allergens
Auchan
Savon de marseille
0.3 kg · Label from France and World · Ingredients incomplete, can’t check
Auchan
Savon de Marseille Amande douce & lait
2 * 100 g · Label from France · Lists fragrance, coconut derivatives
Henkel
Savon de Marseille Douceur Glycérinée
6 * 100 g · Label from France · Lists fragrance
Auchan
Savon de Marseille fleur d’oranger et argan
4*100g · Label from France · Lists fragrance, fragrance allergens, coconut derivatives
Auchan
Savon de Marseille Karité & Jasmin
4 * 100 g · Label from France · Lists fragrance, coconut derivatives
Auchan
Savon de Marseille parfum Lavande
5 * 100 g · Label from France · Lists fragrance, fragrance allergens, coconut derivatives
Auchan
Savon de toilette à l’huile d’olive
100 g · Label from France · Lists fragrance, fragrance allergens, coconut derivatives
Cora
Savon dermatologique visage & corps à l’huile d’amande douce
2 X 100 g · Label from France · Lists fragrance, coconut derivatives
Auchan
Savon Visage & Corps Dermatologique
100 g · Label from France · Lists fragrance, coconut derivatives
Auchan
Savon Visage & Corps Exfoliant Luffa Naturel
100 g · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
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