Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,159 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 25, 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 Body Shop
Life Is… ™ Body Lotion
Body lotion · 250ml · Lists fragrance, fragrance allergens, coconut derivatives
Dr. Dennis Gross
Lift + Repair Eye Mask
Mask · Lists exfoliating acid
Henkel
Lift + Super Correcteur Soin de Jour SPF 15 anti-Rides Correcteur
50 ml · Label from France · Lists fragrance, silicones, chemical UV filters
Henkel
Lift+ Pro-Kollagen + Hyaluron Tages- & Nachtpflege Set
100 ml · Label from Austria · Lists fragrance, silicones
Vichy
Liftactiv Serum 10 Supreme
50 ml · Lists fragrance, drying alcohol, silicones, salicylic acid
Vichy
LIFTACTIV Vitamine C avec de l’acide hyaluronique
10ml · Label from France · Lists drying alcohol
Auchan
Lingettes débarbouillantes sans rinçage parfum fruité
40 lingettes · Label from France · Lists fragrance, coconut derivatives
Auchan
Lingettes douceur à l’eau nettoyante
24 lingettes · Label from France · Lists fragrance, coconut derivatives
Auchan
Lingettes sensitive au lait - peaux sensibles
64 lingettes · Label from France · None of Poliage’s flag groups listed
La Roche-Posay
Lipikar Gel Lavant apaisant protecteur
750 ml · Label from France and Morocco · Lists fragrance, sulfates, coconut derivatives
La Roche-Posay
LIPIKAR Huile Lavante
1 · Label from France · Lists fragrance, sulfates, coconut derivatives
La Roche-Posay
Lipikar Huile Lavante AP+
1 L · Label from Italy · Lists fragrance, sulfates, coconut derivatives
La Roche-Posay
LIPIKAR Huile Lavante Relipidante Anti-irritations
200ml · Label from France · Lists fragrance, exfoliating acid, sulfates, salicylic acid, coconut derivatives
La Roche-Posay
Lipikar Lait Relipidant Corps Anti-Dessechement 48h
200 ml · Label from France · Lists fragrance, silicones, coconut derivatives
La Roche-Posay
Lipikar surgras Douche-crème concentrée Anti-Dessèchement
200 ml · Label from France · Lists fragrance, sulfates, coconut derivatives
La Roche-Posay
Lipikar Syndet AP+
200ml · Label from France and Morocco · Lists sulfates, coconut derivatives
La Roche-Posay
Lipikar Syndet Gel crème nettoyant anti-irritations
400 ml · Label from France · Lists sulfates, coconut derivatives
Thrive Causemetics
Liquid Brilliance Super Serum
Serum · None of Poliage’s flag groups listed
Kate Somerville
Liquid ExfoliKate Triple Acid Resurfacing Treatment
Exfoliant · Lists fragrance allergens, exfoliating acid
Ombia
liquid hand soap
750 ml · Label from Denmark · Lists fragrance, sulfates, coconut derivatives
Deliplus
Loción corporal calm
Label from Morocco and Spain · Lists fragrance, silicones
Deliplus
Loción Corporal Hidrata
Label from Morocco, Portugal and Spain · Lists fragrance, silicones
Neutrogena
Locion corporal hidratacion intensa
Label from Spain · Ingredients incomplete, can’t check
Deliplus
Loción corporal infantil hidratante
600 ml · Label from Morocco and Spain · Lists fragrance, silicones
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.