Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,157 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 26, 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
Naturium
Skin-Renewing Retinol Body Lotion
Body lotion · 8 fl oz · Lists retinoid, silicones
L’Oréal
SkinActive Micellar Foaming Face Wash
Lists sulfates, coconut derivatives
L’Oréal
SkinActive Tonique végétal hydratant à l’extrait d’aloe
200 ml · Label from France · Ingredients incomplete, can’t check
Garnier
Sleek & Shine Smoothing Shampoo
Shampoo · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
Hask
Smooth + Keratin & Jojobal Oil Shampoo
Shampoo · Lists fragrance, fragrance allergens, salicylic acid, coconut derivatives
Olay
Smoothing Daily Facial Cleanser | with Retinol
Cleanser · Lists fragrance, retinoid, silicones
Julep
So Appealing Wipe-Off Lip Tint
Lip · Lists fragrance, fragrance allergens
Wet n Wild
So Defined Volumizing + Defining Mascara
Mascara · Lists drying alcohol
Neutrogena
Sofort einziehende Handcreme
140 ml · Label from Germany · Lists fragrance, silicones
Nivea
Soft
Label from Spain · Ingredients incomplete, can’t check
R+Co
SOFT BOUNCE NATURAL TEXTURE & CURL SHAMPOO
Shampoo · 8.5 OZ · Lists fragrance, fragrance allergens, exfoliating acid, coconut derivatives
Nivea
Soft Moisturizing Cream For Face Body & Hands
Moisturizer · 0.81 g · Lists fragrance, fragrance allergens, drying alcohol, essential oils, coconut derivatives
Kristin Ess
Softening Conditioner
Conditioner · 10 FL OZ · Lists fragrance, fragrance allergens, drying alcohol, silicones
Kristin Ess
Softening Shampoo
Shampoo · 10 FL OZ · Lists fragrance, fragrance allergens, coconut derivatives
Cosmia
Soin démêlant technique color
0.25 l · Label from France and World · Lists fragrance, fragrance allergens, exfoliating acid, silicones, chemical UV filters
Cosmia
Soin démêlant technique force
0.25 l · Label from France and World · Lists fragrance, fragrance allergens
Cosmia
Soin démêlant technique lisse
0.25 l · Label from France and World · Lists fragrance, fragrance allergens
Cosmia
Soin démêlant technique repair
0.25 l · Label from France and World · Lists fragrance, fragrance allergens
Bulldog
Soin Hydratant Peau Sensible Baobab Avoine Epilobe
100 ml · Label from France · None of Poliage’s flag groups listed
Jergens
Soins Ultra
30 mL · Label from Canada · Lists fragrance, fragrance allergens, drying alcohol, silicones
Yves rocher
SOLAIRE PEAU PARFAITE
200ml · Label from France · Lists fragrance, fragrance allergens, drying alcohol, silicones, coconut derivatives
solmo
Lists fragrance, fragrance allergens, retinoid, silicones
Cien
Sonnenmilch classic LSF 30
250 ml · Label from Germany · Lists fragrance, fragrance allergens, drying alcohol, silicones, chemical UV filters
The Ordinary
Soothing & Barrier Support Serum
Serum · Lists fragrance allergens
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