Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,160 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
Inika Organic
Purity Lash (Black)
Mascara · 8.5 mL · None of Poliage’s flag groups listed
Philosophy
Purity Made Simple One-Step Facial Cleanser
Lists fragrance allergens, drying alcohol, essential oils, sulfates, coconut derivatives
Philosophy
Purity Made Simple One-Step Facial Cleanser with Turmeric Extract
Lists fragrance allergens, drying alcohol, essential oils, sulfates, coconut derivatives
Kristin Ess
Purple Conditioner
Conditioner · 10 FL OZ · Lists fragrance, drying alcohol, essential oils, silicones, coconut derivatives
Kristin Ess
Purple Shampoo
Shampoo · 10 FL OZ · Lists fragrance, silicones, coconut derivatives
Cosmia
Q10 - creme nuit anti-rides
0.05 l · Label from France · Lists fragrance
Cosmia
Q10 - recharge creme nuit anti-rides
0.05 l · Label from France · Lists fragrance
NIVEA
Q10 Anti-Falten POWER
50 ml · Label from Germany · Lists fragrance, chemical UV filters, coconut derivatives
Nivea
Q10 plus C Anti-rides + Energie
40 ml · Label from France · Lists fragrance, fragrance allergens, silicones
Naturium
Quadruple Hyaluronic Acid Serum 5%
Serum · 1.0 fl oz · None of Poliage’s flag groups listed
Medik8
r-Retinoate Day & Night
Serum · Lists retinoid
R+Co
R+Co High Dive Moisture and Shine Crème
150 ml · Label from Brazil · Lists fragrance, fragrance allergens, silicones
Algenist
Radiance Glow Refining Multi-Tasking Peel Pads
Exfoliant · Lists exfoliating acid, salicylic acid
Derma E
Radiance Toner
Toner · Lists fragrance, exfoliating acid
L’Oréal Paris
Radiant Smoothing Cream Cleanser
Cleanser · Lists fragrance, fragrance allergens, exfoliating acid, parabens, salicylic acid, coconut derivatives
Suave
Radiante Restore Vitamin C
28 FL Oz / 828mL · Label from Costa Rica · Ingredients incomplete, can’t check
Renee Rouleau
Rapid Response Detox Cleanser
Cleanser · Lists exfoliating acid, essential oils, coconut derivatives
Renee Rouleau
Rapid Response Detox Toner
Toner · Lists exfoliating acid, essential oils, salicylic acid
Dermalogica
rapid reveal peel
Exfoliant · Lists fragrance allergens, exfoliating acid, essential oils, coconut derivatives
Palmolive
Rasiercreme Sensitive (with Palm Extract)
100 ml · Label from Austria, Belgium and France · Lists fragrance, fragrance allergens, coconut derivatives
Tree Hut
Raspberry Fizz Hydraglow Body Lotion
Body lotion · Lists fragrance, fragrance allergens, drying alcohol, silicones
R+Co
REBOUNCE Hydrating Curl Glaze
Hair styling · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, coconut derivatives
R+Co
REBOUNCE NATURAL TEXTURE & CURL DEFINING CREME
Hair styling · 5 OZ · Lists fragrance, fragrance allergens, exfoliating acid, coconut derivatives
Cosmia
Recharge crème lavante mains
1 l · Label from France · Lists fragrance, sulfates, coconut derivatives
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