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 22, 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
Almond Milk Body Scrub
Exfoliant · Lists fragrance, fragrance allergens
The Ordinary
Aloe 2% + NAG 2% Solution
Serum · Lists exfoliating acid
Fructis
Aloe Hydro Bomb Kräftigendes Shampoo
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
COSRX
Aloe Soothing Sun Cream
Lists fragrance, fragrance allergens, drying alcohol, silicones, chemical UV filters
Sedal
Aloe Vera & Menta
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
The Ordinary
Alpha Arbutin 2% + HA
Serum · None of Poliage’s flag groups listed
Oars + Alps
Aluminum-Free Deodorant - Unscented with Prebiotics
Deodorant · None of Poliage’s flag groups listed
Oars + Alps
Aluminum-Free Whole Body Deodorant Cream
Deodorant · Lists fragrance, fragrance allergens, exfoliating acid
alvalverde NATURKOSMETIK
alverde NATURKOSMETIK Handcreme Schutz & Pflege, 75 ml
Lists fragrance
L’Oréal
Ambre Solaire Aftersun
Lists fragrance, fragrance allergens, parabens, silicones
Drunk Elephant
Amino Rain Glasswater Serum
Serum · Lists coconut derivatives
Pantene
Ampoules Hair Rescue
Lists fragrance, fragrance allergens, drying alcohol, silicones
Tree Hut
Angel Cake Mini Whipped Body Butter
Body lotion · Lists fragrance, fragrance allergens, silicones
Tree Hut
Angel Cake Whipped Body Butter
Body lotion · Lists fragrance, fragrance allergens, silicones
Neutrogena
Anti Pickel Peeling Cleanser AHA/PHA/BHA
Lists exfoliating acid, salicylic acid, coconut derivatives
Caudalie
Anti-Aging Cream Moisturizer
Moisturizer · Lists fragrance, fragrance allergens, coconut derivatives
Derma E
Anti-Aging Regenerative Day Cream
Moisturizer · Lists fragrance, fragrance allergens, retinoid, essential oils, silicones
Derma E
Anti-Aging Regenerative Night Cream
Moisturizer · Lists fragrance, fragrance allergens, retinoid, essential oils, silicones
Derma E
Anti-Aging Regenerative Serum
Serum · Lists fragrance, fragrance allergens, exfoliating acid, retinoid, essential oils, coconut derivatives
Caudalie
Anti-Aging Serum with Niacinamide and Hyaluronic Acid
Serum · Lists fragrance, fragrance allergens
Neutrogena
Anti-boutons Masque Nettoyant 2-en-1
Lists fragrance, exfoliating acid, salicylic acid, coconut derivatives
Shea moisture
Anti-Dandruff Shampoo
Lists fragrance, exfoliating acid, coconut derivatives
Nizoral
Anti-Dandruff Shampoo
Lists fragrance, sulfates, formaldehyde releasers
head & shoulders
ANTI-DANDRUFF SHAMPOO
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
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