Skin-Identical/Repairing Ingredients , Emollients , Cell-Communicating Ingredients
Active ingredient in lecithin. Every cell membrane in the body requires phosphatidylcholine (PC). It is also a major source of the neurotransmitter acetylcholine. Acetylcholine is used by the brain in areas that are involved in long-term planning, concentration, and focus, but all of that information is associated with ingesting PC, not putting it on the skin. PC is considered a very good water-binding agent and aids in the penetration of other ingredients into the skin. It absorbs well without feeling greasy or heavy (although other ingredients can perform similarly, including glycerin, ceramides, and hyaluronic acid) (Sources: Skin Pharmacology and Applied Skin Physiology, September–October 1999, pages 235–246; and Journal of Controlled Release, March 29, 1999, pages 207–214.) See lecithin

«Back to Ingredient Dictionary

About the Experts

Paula Begoun is the best-selling author of 20 books on skin care and makeup. She is known worldwide as the Cosmetics Cop and creator of Paula's Choice. Paula's expertise has led to hundreds of appearances on national and international television including:

View Media Highlights

The Paula's Choice Research Team is dedicated to helping you find the absolute best products for your skin, using research-based criteria to review beauty products from an honest, balanced perspective. Each member of the team was personally trained by Paula herself.

585630-IIS2 v1.0.0.369 2/28/2015 10:00:13 AM
Skip to Top of Page
FREE Shipping on Everything | FREE Ready For Retinol Trial Set on $65+