Exogenous stems cells are those stem cells which are harvested from outside sources. Specifically, exogenous stem cells, such as those associated with the destruction and/or therapeutic cloning of a human embryo, fuel a political debate about their production and use.

On the other hand, Amatokin (Amatokin-Cream) activates stem cell reservoirs which are already inherent in the human body. Amatokin (Amatokin-Cream) is often mistaken for a controversial technique simply because it is associated with "stem cells." However, Amatokin (Amatokin-Cream) simply provides the proper environment for the body's natural stem cell reservoirs, which are responsible for rejuvenating the skin. This in turn reduces common aging effects of the skin such as wrinkles, laugh lines, etc.

(NOTE: While the public debate rages about the use of stem cells from fertilized human eggs, most people don’t realize that human skin is the largest repository of stem cells in the body. Don’t believe it? Check the National Institute of Health’s database on stem cell research at http://stemcells.nih.gov/info/scireport.)