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 21, 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
J.R. Watkins
Hand Cream
Lists fragrance, fragrance allergens
Ombia
Hand Konzentrat
Lists sulfates
hand soap
Lists fragrance, sulfates, coconut derivatives
neutrogena
Handcreme - sofort einziehende
Lists fragrance
Balea
Handcreme Urea
Lists fragrance, fragrance allergens
Balea
Handkonzentrat (strapazierte und rissige Hände)
Lists exfoliating acid, sulfates, salicylic acid
harvest gathering hand soap
Lists fragrance, coconut derivatives
l-oreal
Hautklar Tägliches Anti-Pickel Gesichtswasser
Lists fragrance, fragrance allergens, drying alcohol, chemical UV filters, salicylic acid
Hawaiian Tropic
Hawaiian Tropic Island Sport
Lists fragrance, fragrance allergens, silicones, chemical UV filters, coconut derivatives
Hawaiian Tropic
Hawaiian Tropic Silk Hydratation
Lists fragrance, fragrance allergens, parabens, silicones, chemical UV filters, coconut derivatives
Head&Shoulders
Head & Shoulders 2 in 1 Classic (Derma & Care Formula)
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
head & shoulders
head & shoulders 2in1 classic clean
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
P&G
Head and shoulders
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
Procter & Gamble
Head and Shoulders
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
Head & Shoulders
head and shoulders classic
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
head&shoulders
head&shoulders shampooing antipelliculaire
Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
O’Keefes
Healthy Feet Cream
None of Poliage’s flag groups listed
O’Keeffe’s
Healthy Feet Cream
Lists silicones
Cetaphil
Healthy Radiance Antioxidant-C Serum
Serum · Lists drying alcohol
Cetaphil
Healthy Renew Day Cream SPF 30
Sunscreen · Lists chemical UV filters
Unilever
Heavenly Milk Shower Cream
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, formaldehyde releasers, coconut derivatives
First Aid Beauty
Hello FAB Coconut Skin Smoothie Priming Moisturizer
Moisturizer · Lists silicones, coconut derivatives
essence
Hello, good stuff cica face cream
Lists fragrance, coconut derivatives
hemp body lotion
Lists fragrance, fragrance allergens
Related guides
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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.