THE INGREDIENT SHELF

Hydrators and barrier ingredients, explained plainly

These are the ingredients that keep water in and the skin barrier working. Each page says what the research shows and where it is thin.

6 ingredients

Humectants

A clear, sweet liquid used in nearly every moisturiser to keep skin feeling soft. Also called glycerol, and found in soaps, cleansers and toothpaste.

A water-holding molecule found naturally in skin. Used in serums and moisturisers, and listed as hyaluronic acid or sodium hyaluronate.

A clear, thick liquid used in moisturisers, cleansers and many other products. Often added as a solvent to help other ingredients dissolve.

Fats that make up part of skin's natural barrier. Added to moisturisers and cleansers, and listed as ceramide NP, AP or EOP.

An exfoliating acid first found in sour milk. Used in peels, toners and moisturisers.

A compound found naturally in skin. Used in moisturisers and foot creams for dry, rough skin.

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