Placentas, also known as afterbirth, are full of protein, iron, and tons of vitamins and minerals, which, I will allow, make them excellent for the health of hair, skin, and nails. People have been using the placentas of sheep and horses as beauty aids for time immemorial, in fact. But guess what? We have a lot of nice ways to synthesize this stuff now, and you could also just use wheat protein and run-of-the-mill vitamins to get the same effect. I guess treatments like this are more natural, but to me, they're also gross. I used a placenta hair treatment once, and although it worked well, it was no better than some hot oil and a deep conditioner, and it smelled pretty funky. If you were offered a placenta facial, would you take it in all its "natural" glory?