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
Cosmia
Eau micellaire fraîcheur
Lists fragrance
Cosmia
Eau micellaire sensitive
None of Poliage’s flag groups listed
La roche-posay
Effaclar
Lists fragrance, drying alcohol, exfoliating acid, salicylic acid, coconut derivatives
La Roche-Posay
Effaclar AI - Correcteur Ciblé
Lists fragrance, exfoliating acid, silicones, salicylic acid
La Roche-Posay
Effaclar duo (+)
Lists fragrance, exfoliating acid, silicones, salicylic acid
La Roche-Posay
Effaclar Duo (+) Unifiant Teinte Light
Lists fragrance, exfoliating acid, silicones, salicylic acid
La Roche-Posay
Effaclar Duo (+) Unifiant Teinte Medium
Lists fragrance, exfoliating acid, silicones, salicylic acid
La Roche-Posay
Effaclar H Crème Lavante
Lists fragrance, sulfates, coconut derivatives
La Roche-Posay
Effaclar K (+)
Lists fragrance, silicones
La Roche-Posay
EFFACLAR K(+) Soin rénovation peau grasse
Lists fragrance, exfoliating acid, silicones, salicylic acid
Olay
Elasticity Boosting Body Wash with Collagen Peptide Serum Complex
Body wash · Lists fragrance, sulfates, coconut derivatives
Wella
Elements
Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, salicylic acid, coconut derivatives
L’Oreal Paris
Elivive Glycolic Gloss Gloss Combing Cream
Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, silicones, chemical UV filters, salicylic acid
L’Oréal
Elsene Color-Vive Miracle Instantané
Lists fragrance, fragrance allergens, drying alcohol, parabens, silicones, chemical UV filters
L’Oréal
Elsene Total Repair 5 Miracle Instantané
Lists fragrance, fragrance allergens, drying alcohol, silicones
L’Oréal
Elseve Anti-casse shampooing réparateur
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Elseve Antipelliculaire Selenium S actif shampooing traitant
Lists fragrance, fragrance allergens, sulfates, parabens, silicones, coconut derivatives
L’Oréal
Elseve Antipelliculaire shampooing traitant
Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Elseve Argile Extraordinaire Shampooing antipelliculaire
Lists fragrance, fragrance allergens, exfoliating acid, essential oils, sulfates, salicylic acid, coconut derivatives
L’Oréal
Elseve Arginine Resist X3 (format XXL)
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Elseve Arginine Resist X3 (Formule 2 en 1)
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Elseve Arginine Resist X3 (Maxi Format)
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Elseve Boucles Shampooing définissant
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Elseve Color-Vive Shampooing soin (format XXL)
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, chemical UV filters, salicylic acid, coconut derivatives
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