Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,130 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
LaSource hand therapy
Ingredients incomplete, can’t check
Jergens
Lavender Dreams Shea Fusion
Body lotion · Lists fragrance, fragrance allergens, silicones
Jergens
Lavender Lotion Bursts
Body lotion · Lists fragrance, fragrance allergens, silicones
Catrice
Lazy Day All In One Serum
Serum · None of Poliage’s flag groups listed
Le Petit Marseilliais
Le Petit Marseillais Pamuk Sütü Sıvı Sabun
500 ml · Label from Turkey · Lists fragrance, sulfates, coconut derivatives
PRAVANA
Leave-In Treatment
Conditioner · Lists fragrance, fragrance allergens, exfoliating acid, silicones, chemical UV filters
Bath & Body Works
Lemon Poppyseed Gentle Foaming Hand Soap with Natural Essential Oils
259 mL · Label from Canada · Lists fragrance, fragrance allergens, sulfates, chemical UV filters, coconut derivatives
lemon zesty scrub
119g · Label from Canada · Lists fragrance, sulfates, parabens
Ole Henriksen
Lemonade Smoothing Scrub
Exfoliant · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, coconut derivatives
Bubble
Level Up Balancing Gel Moisturizer for Oily and Combination Skin Types
Moisturizer · None of Poliage’s flag groups listed
cien
lidl crème de soin hydratante
250 ml · Label from France and Morocco · Lists fragrance, fragrance allergens, sulfates
The Body Shop
Life Is Deodorant
Deodorant · 50ml · Lists fragrance, fragrance allergens, drying alcohol
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
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.