Prevent dandruff, reduce irritation and stimulate hair growth with Alcepin Dandruff Killer and Caffeine Shampoo Duo. This duo contains two of Alpecin’s best selling shampoos. - N.P. The set includes the following products: 1 x Alpecin Dandruff Killer Shampoo (250ml): Designed with four active ingredients which work together to combat and prevent dandruff, the Alpecin Dandruff Killer shampoo promises to leave the scalp soft, soothed and flake free. Containing zinc pyrithione and piroctone olamine to fight against fungi, bacteria and yeast whilst salicylic acid and fumaric acid remove existing dandruff, this unique anti-dandruff shampoo reduces irritation to leave you feeling refreshed. Suitable for daily use. 1 x Alpecin Caffeine Shampoo C1 (250ml): Achieve great things with this Caffeine Shampoo C1 from Aplecin. A natural stimulant, caffeine penetrates into hair to work directly into follicles to improve structure and stimulate growth. Leave on for 2 minutes to allow for full penetration. If left on for longer the caffeine continues to work into the scalp, leaving you with a more intense treatment. Fine, weakened hair becomes stronger and easier to style.