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A moisturiser (or moisturizer) is a liquid that is used for softening the skin, especially for naturally dry skins. They increase the skin's water content by reducing evaporation.

They can be quite a complicated chemical mixture. They may contain naturally occurring skin lipids and sterols, artificial or natural oils, emollients, lubricants, etc.

Moisturisers are not always needed or used. They are most useful for persons with dry skin.

How they act[change | change source]

These are the effects of a moisturiser:

  1. Occlusives work by forming a thin film on the surface of the skin to prevent loss of moisture.
  2. Humectants attract water vapor from the air to moisturize the skin.
  3. Some add deficient materials. These aim to restore natural moisturizing factors on the skin.