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
Bath & Body Works
White Tea & Sage Gentle Foaming Hand Soap with Essential Oils
259 mL · Label from Canada · Lists fragrance, fragrance allergens, essential oils, sulfates, chemical UV filters, coconut derivatives
ARCONA
White Tea Purifying Cleanser
Lists fragrance, fragrance allergens, drying alcohol, essential oils, coconut derivatives
Crest
Whitening Gel Flouride Toothpaste
70 mL · Label from Canada · Lists fragrance, sulfates
Old Spice
Whitewater
1l · Lists fragrance, fragrance allergens, sulfates, salicylic acid, coconut derivatives
whole blends coconut oil and cocoa butter shampoo and conditioner
Ingredients incomplete, can’t check
Williams
Willi gar 150 oxyg sensib
150 ml · Label from France · Lists fragrance, sulfates, coconut derivatives
Williams
Williams 75ml stk blueman
75 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Williams
Williams inv stick 75mlx2
150 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Lacura
Wonder Spray Curls
200ml · Label from United Kingdom · Lists silicones
Rimmel London
Wonder’Lash Mascara with Argan Oil
Mascara · Lists retinoid
Rimmel London
WONDER’LASH WATERPROOF MASCARA WITH ARGAN OIL
Mascara · Lists retinoid
Rimmel London
Wonder’luxe Volume Mascara
Mascara · Lists retinoid
O’Keeffe’s
Working Hands Hand Cream
2.7 oz · Lists formaldehyde releasers
Xtra Laundry Soap
Ingredients incomplete, can’t check
Yves rocher
Yves Rocher Hydra Vegetal Creme Hydrating Gel Cream
Label from France · Ingredients incomplete, can’t check
Oral-B
Zahnfleisch-Intensivpflege
75 ml · Label from Germany · Lists fragrance, fragrance allergens, essential oils, sulfates
Oral-B
Zahnpasta Professioneller Schutz
Label from Germany · Lists fragrance, fragrance allergens, essential oils, sulfates, coconut derivatives
Zendium
Zendium Bain de Bouche Biogum
500 ml · Label from France · Lists fragrance, fragrance allergens
Axe
Zero pellicule - shampooing zinc & eau de glacier
300ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
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