 [ Symptoms ] why would keratin shampoo make my hair fall out as soon as i quit using it it stopped  i would like to get a keratin smoothing treatment but i have read similar stories where people lost their hair to the point of having bald spots breakage i could understand but my hair fell out at the root it does not make any sense [ Disease ] it sounds like you may have had some kind of allergic reaction to an ingredient in the shampoo normally when someone uses a product and develops symptoms that go away when they stop using the product it means an ingredient in the product was the cause of their symptoms it may not have been the keratin at all shampoos contain a wide variety of ingredients from perfumes to dyes it is possible your scalp really did not like one of the components of that particular shampoo is formula all that said i admit i do not know anything about keratin treatments specifically however i certainly would be hesitant to undergo any treatment with a reputation for making people is hair fall out take care