This is our first controversy, a carryover from a discussion that began on It deals with products that contain a single cytokine (epidermal growth factor) as an active ingredient.  it is  being sold by Sif Cosmetics of Iceland (  Absent from the web site is any reference to scientific studies documenting the safety or efficacy of the products, or the active ingredient.  The actual concentration of EGF is not listed for the product.  The controversy has two parts. 1) The use of transgenic plants to produce drugs and biochemicals has been a subject of scientific debate for some time.  2) The wisdom of applying EGF  without counterbalancing cytokines to human skin is examined in light of extensive scientific evidence as to it’s known effects.

View the whole article here.

July 10, 2012
Dr John
Dr John „Ræktun og notkun EGF vaxtaþáttar í húðvörum“, Náttú July 10, 2012 URL: [Skoðað:Dec. 1, 2022]
Efni má nota eða vitna í samkvæmt almennum venjum sé heimilda getið með slóð eða fullri tilvitnun hér að ofan.
breytt: July 24, 2012