mannitol

A plant-derived or lab-made sugar that works in skin care to bind moisture, condition, and also help keep ingredients blended together. It works well with naturally-occurring substances in skin such as hyaluronic acid.

References for this information:

Journal of Cosmetic Dermatology, June 2012, pages 87-92
Dermatitis, May 2011, pages 141-146
Journal of Cosmetic Science, March-April 2007, pages 109-133

See sucrose

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