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 23, 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
Aveeno
daily moisturizer with salicylic acid
Lists fragrance, silicones
daily nourishing body lotion
Lists fragrance, fragrance allergens, silicones
Differin
Daily Oil-Free Hydrating Cleanser
Cleanser · Lists exfoliating acid, coconut derivatives
Glossier
Daily Perfecting Lotion
Body lotion · Lists fragrance, fragrance allergens
Medik8
Daily Radiance Vitamin C
Sunscreen · Lists fragrance allergens, essential oils, silicones, chemical UV filters, coconut derivatives
Indie Lee
Daily SPF 50 Primer
Sunscreen · Lists coconut derivatives
R+Co
DALLAS Biotin Thickening Conditioner
Conditioner · Lists fragrance, fragrance allergens, coconut derivatives
R+Co
DALLAS Biotin Thickening Shampoo
Shampoo · Lists fragrance, fragrance allergens, coconut derivatives
OGX
Damage Remedy + Coconut Miracle Oil Shampoo
Lists fragrance, silicones, coconut derivatives
K18
DAMAGE SHIELD protective conditioner
Conditioner · Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, essential oils
Vanicream
Dandruff Shampoo
Shampoo · Lists coconut derivatives
Caudalie
Dark Circle Brightening Eye Cream with Niacinamide
Eye cream · Lists coconut derivatives
Caudalie
Dark Spot Brightening Moisturizer with Niacinamide
Moisturizer · Lists fragrance
R+Co
DE LUXE REPARATIVE CONDITIONER
Conditioner · Lists fragrance, fragrance allergens, drying alcohol, silicones, chemical UV filters
Irish Spring
Deep Action Scrub Men’s Exfoliating Face & Body Wash
Lists fragrance, sulfates, formaldehyde releasers, coconut derivatives
Neutrogena
Deep Clean Gentle Facial Scrub
Lists fragrance, exfoliating acid, parabens, salicylic acid, coconut derivatives
Neutrogena
Deep Clean Invigorating Foaming Scrub
Lists fragrance, sulfates, parabens
Jergens
Deep Conditioning Shea-Cocoa Butter Blend
Body lotion · Lists fragrance, fragrance allergens, silicones
Cetaphil
Deep Hydration 48 Hour Activation Serum
Serum · Lists coconut derivatives
Cetaphil
Deep Hydration Hydrating Water Gel
Serum · Lists silicones
Caudalie
Deep Hydration Moisturizer
Moisturizer · Lists fragrance, coconut derivatives
Cetaphil
Deep Hydration Refreshing Eye Serum
Eye cream · None of Poliage’s flag groups listed
Neutrogena
Deep Moisture
Lists silicones
Neutrogena
Deep Moisture - hypoallergenic body lotion
Body lotion · None of Poliage’s flag groups listed
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