Does Saw Palmetto berries really help with hair loss?!

Does Saw Palmetto berries really help with hair loss?

Hi.
I've heard that the Saw Palmetto berries at least prevent hair loss by blocking specific hormon. I would like to know if it's true and how do I use it?
Thank you

Try this: take 2 tbls.apple cider vinegar in a glass of water 3-4 x day. Has 93 vitamins and minerals. Very inexpensive. Aids digestion and gives you a very happy outlook on life. You may rinse hair with 1 cup acv and 2 cups water, then rinse. Hair will be soft and shiny. Use pure coconut oil for maximum shine and protection. Read the web on both these products.