Alpecin double effect shampoo 6 bottle multi pack enables you to bulk buy and each bottle is as low as 580 each saving 23 off rrp alpecin double effect shampoo fights against dandruff and hair loss hereditary with its unique caffeine complex in the first step this double effect shampoo loosens scaly keratinous cells and thoroughly removes dandruff from the scalp this clears the way for the caffeine complex in the second step the active ingredients penetrate into the hair root