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
Act+Acre
1% Vitamin B-5 Fine Hair Conditioner
Conditioner · Lists fragrance, essential oils
Differin
10% Benzoyl Peroxide Spot Treatment
Serum · None of Poliage’s flag groups listed
Naturopathica
10% Glycolic Acid + Aloe Vera Resurfacing Pads
Exfoliant · Lists exfoliating acid, essential oils
The INKEY List
15% Vitamin C + EGF Serum
Serum · Lists fragrance allergens
Yves rocher
2 X Yves Rocher Hydra Vegetal Intense Hydrating Mask 2.5 FL Oz
Lists fragrance, silicones, coconut derivatives
Tula
24-7 Moisture Hydrating Day & Night Cream
Lists fragrance, fragrance allergens, essential oils, silicones
Tula
24-7 Moisture Luminous Brightening Moisturizer
Moisturizer · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, silicones
Tula
24-7 Weightless Moisture
Moisturizer · Lists exfoliating acid, coconut derivatives
essence
24h hand protection balm
Lists fragrance, parabens
eos
24H Moisture Body Lotion
Body lotion · Lists silicones
The INKEY List
360° Acne Clearing Serum
Serum · Lists fragrance allergens, exfoliating acid, silicones, salicylic acid, coconut derivatives
Crest
3D White Luxe Diamond Strong Brilliant Mint Fluoride Toothpaste
Lists fragrance, coconut derivatives
Oral-B
3D White Professional Zahnpasta
Lists fragrance, fragrance allergens, essential oils, sulfates, coconut derivatives
Differin
5% Benzoyl Peroxide Daily Deep Cleanser
Cleanser · None of Poliage’s flag groups listed
Balea
5% UREA - DUSCHE+SHAMPOO
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
L’Oréal
7 day hand cream
Lists fragrance allergens
A Thousand Wishes
Lists fragrance, fragrance allergens, parabens, silicones, formaldehyde releasers
Drunk Elephant
A-Shaba Complex Retinol Eye Serum with Caffeine + Copper Peptides
Eye cream · Lists retinoid, coconut derivatives
SkinCeuticals
A.G.E. Interrupter Ultra Serum
Lists fragrance, silicones
Tula
A+ Renewal
Serum · Lists exfoliating acid, retinoid
Yves Rocher
Accord Chic : Secrets d’Essences
Lists fragrance, fragrance allergens, silicones
Typology
Acide polyglutamique 3% + Extrait d’algue rouge
Lists fragrance allergens
Dermalogica
Acne Biotic Moisturizer
Moisturizer · Lists fragrance allergens, exfoliating acid, essential oils, salicylic acid
PanOxyl
Acne Clearing Spot Treatment
Serum · Lists silicones
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