In the report released to ABC News, FDA scientists concluded that DHA does not stop at the outer dead layers of skin. They wrote: "The fate of DHA remaining in skin is an important issue, since high DHA skin levels were found." They added that tests they performed revealed that much of the DHA applied to skin actually ended up in the living layers of skin. They concluded: "This leaves about 11 percent of the applied DHA dose absorbed remaining in the epidermis and dermis." A toxicologist and lung specialist at the University of Pennsylvania's Perelman School of Medicine (Dr. Rey Panettieri) has commented, "The reason I'm concerned is the deposition of the tanning agents into the lungs could really facilitate or aid systemic absorption -- that is, getting into the bloodstream. These compounds in some cells could actually promote the development of cancers or malignancies, and if that's the case then we need to be wary of them."