@feruze-- Be careful with placenta products for hair. I don't deny that placenta can reduce hair loss and improve hair quality. But along with those nutrients and vitamins, placenta also contains hormones like estrogen and progesterone. These hormones can be absorbed into the body through the scalp and hair.
I read in the news that a young girl experienced early puberty (menstruation, breast growth and body hair) because of hair products with placenta.
It's always a good idea to use placenta products with caution and use it less frequently if possible to get the benefits without the side effects. And placenta products should not be used on children.