Characteristics
- INCI
- Water
- Ru.
- Aqua
- CAS
-
7732-18-5
This is the substance number in the Chemical Abstracts Service registry. The CAS number uniquely identifies a substance regardless of language, trade name, or synonyms.
- EC
-
231-791-2
This is the substance number in the European chemical identification system (EC number), used in European regulatory databases including ECHA/CosIng.
- Functions
- solvent
Description
Good old water, aka H2O. The most common skincare ingredient of all. You can usually find it right in the very first spot of the ingredient list, meaning it’s the biggest thing out of all the stuff that makes up the product.
It’s mainly a solvent for ingredients that do not like to dissolve in oils but rather in water.
Once inside the skin, it hydrates, but not from the outside - putting pure water on the skin (hello long baths!) is drying.
One more thing: the water used in cosmetics is purified and deionized (it means that almost all of the mineral ions inside it is removed). Like this, the products can stay more stable over time.
Frequently Asked Questions about Water
What does water do in cosmetics?
Is water just a filler ingredient?
Can water hydrate your skin?
Is water safe for sensitive skin?
Why is water in so many skincare products?
Products with Water (145 852 total)
Most often found in L'Oreal products (915 items)
