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
Foaming Hand Soap, Savon Moussant pur. Our les mains
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Head & Shoulders
For Men (3 Action Formula)
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Neutrogena
Formule Norvégienne Deep Moisture Sensitive
Lists silicones
Colomer
Formule ZP 11 Cheveux Gras
Lists fragrance, fragrance allergens, drying alcohol, sulfates, parabens, silicones, formaldehyde releasers, coconut derivatives
Colomer
Formule ZP11 Cheveux Normaux
Lists fragrance, fragrance allergens, sulfates, parabens, silicones, formaldehyde releasers, coconut derivatives
Allies of Skin
Founder’s Essence 56 Ellagic & P.A.D. Light Reflecting Fluid
Toner · Lists exfoliating acid
Curlsmith
Fragrance-Free Conditioner
Conditioner · Lists drying alcohol, coconut derivatives
Method
Free + Clear laundry detergent
Lists drying alcohol, sulfates, coconut derivatives
TheraBreath
Fresh Breath Oral Rinse
Lists fragrance
The Body Shop
Fresh Nude Foundation
Foundation · Lists fragrance, drying alcohol, coconut derivatives
Moroccanoil
Frizz Control Conditioner
Conditioner · Lists fragrance, fragrance allergens, exfoliating acid, silicones, coconut derivatives
John Frieda
Frizz Ease
Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
John Frieda
Frizz Ease Flawlessly Straight Shampooing lisse idéal
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Curlsmith
Frizz Rescue Curl Retainer
Hair styling · Lists fragrance, fragrance allergens, essential oils, coconut derivatives
l-oreal
Fructis Aloe Hydra Bomb
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
l-oreal
Fructis Anti-Pelliculaire
Lists fragrance, fragrance allergens, exfoliating acid, essential oils, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Fructis Après-shampooing Fortifiant Color Resist
Lists fragrance, fragrance allergens, drying alcohol, silicones, chemical UV filters
L’Oréal
Fructis Force Ultime
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
Garnier
Fructis Fuerza y Brillo
Lists fragrance, fragrance allergens, exfoliating acid, essential oils, sulfates, salicylic acid, coconut derivatives
L’Oréal
Fructis Nutri Coconut No Frizz
Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Fructis Nutri Repair 3 Huiles
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Fructis Nutri Repair Intense
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Fructis Shampooing antipelliculaire Classic
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Fructis Shampooing fortifiant 2 en 1
Lists fragrance, fragrance allergens, exfoliating acid, essential oils, sulfates, silicones, salicylic acid, coconut derivatives
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