com, the concern is whether
DHA, is able to penetrate the skin, but that the indications are that it cannot. The site goes on to say that:
“If DHA could penetrate the skin and enter the bloodstream, there is no doubt that would be undesirable. Of course, it wouldn't be undesirable just during pregnancy, but at any time. DHA has been in use as a cosmetic ingredient in the U.S.