Perfect for hair that shows early signs of thinning redken cerafill defy aminexil treatment is a fast absorbing treatment that boasts a nozzle for easy targeted application helping you to prevent premature hair loss and maintain the density of thinning hair the treatment promotes optimal scalp environment for healthy looking hair benefits stimulates and nourishes the scalp for healthy scalp environment strengthens the hair fiber to prevent hair breakage nozzle provides easy targeted appli