Ingredient dictionary

Aqua

Also listed as: Water, Eau

Aqua is the INCI name for water, the main base of many creams, lotions and cleansers that dissolves and carries the other ingredients. It is on the label of 1142 products in our library. Checked against our library November 6, 2026.

The catch: none for most people; check the full product list if your skin reacts easily.

What Aqua does

Dissolves salts, sugars and other water-soluble ingredients
Forms the watery base of creams and gels
Sets the texture and spreadability of the product
Helps other ingredients blend into one even mix

Aqua is simply water. Before it goes into a product, it is purified, often by removing minerals and microbes, so the formula stays clean and stable. Water alone does not protect a product from microbes, so water-based formulas also contain preservatives.

Formulators use aqua because it is inexpensive, easy to handle, and dissolves many useful ingredients, from humectants to salts. It often makes up a large share of creams, gels and cleansers, and it shapes how light or rich a product feels. As it evaporates on skin, it leaves a cool, fresh feeling, which is why water-based products usually feel light.

Good for

Suits nearly every skin and hair type, since it is the base of most water-based products people use daily.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is aqua the same as water?

Yes. Aqua is the INCI name for water, the standard name used on ingredient lists around the world. On a label you may see Water, Eau, or Aqua, and they all refer to the same thing.

Why is aqua listed first on a label?

Ingredients are generally listed from highest amount to lowest, and water is often the largest part of a water-based product. So seeing aqua at the top usually means the formula is mostly water.