Peptides are one of the biggest breakthroughs in the treatment of aging skin.  They have been around for over 20 years but did not achieve real fame until they were proven to be more effective than the gold standard prescription Vitamin A in the treatment of photoaging.

There are 4 classes...

The term interleukin was first proposed in 1979 to describe two leukocyte products with similar molecular weights (15,000-17,000): Interleukin-1 (IL-1) was the name given to the macrophage product, called lymphocyte-activating factor, that activated T and B lymphocytes.  Interleukin-2...