I DO NOT HAVE HAIR LOSS I DON'T KNOW IF IT PREVENTS HAIR LOSS OR HELPS HAIR GROW I AM DOING A REVIEW ON HOW THE SHAMPOO MAKES MY HAIR FEEL AND I DON'T USE IT EVERY DAY, I LIKED THAT IT GAVE MY HAIR BODY I DIDN'T LIKE THE SMELL OF THE SHAMPOO AT FIRST. I received this shampoo as a gift and i love to try new products like shampoo's and conditioners. br This is the website to go to: if your interested, The shampoo makes your hair soft and shiny. It says on the bottle it is made with 100 Argan Oil, Vitamin E, essential fatty acids and it is good for all hair types. It is sulfate, silicone,dye and alcohol free and that it's a professional hair care product. It is suppose to make your hair stronger and grow longer and stop thinning hair i don't know if it does this or not.