Alpecin C1 Caffeine Shampoo for Men, 8.45 Fluid Ounce (250ml) (Pack of 2) - Walmart.com
Amazon.com : Alpecin C1 Caffeine Shampoo Men's Natural Hair Growth Shampoo for Thinning Hair with Niacin and Castor Oil (Pack of 2), 8.45 fl oz. : Beauty & Personal Care
Caffeine shampoo firm banned from promoting anti-hair loss product | HeraldScotland
Amazon.com : Alpecin Caffeine Shampoo C1 Black Edition, Men's Natural Hair Growth Shampoo for Thinning Hair with Niacin, Menthol, and Castor Oil, 8.45 fl. oz. : Beauty & Personal Care