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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. - Walmart.com
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Amazon.com : Alpecin C1 Caffeine Shampoo 12.68 fl oz (Pack of 2), Promote Natural Hair Growth and Thickness, Energizes Hair and Scalp, Leaves Hair Feeling Stronger : Beauty & Personal Care
![Amazon.com : Alpecin C1 Caffeine Shampoo, 8.45 fl oz (Pack of 2) Men's Natural Hair Growth Shampoo for Thinning Hair with Niacin and Castor Oil : Beauty & Personal Care Amazon.com : Alpecin C1 Caffeine Shampoo, 8.45 fl oz (Pack of 2) Men's Natural Hair Growth Shampoo for Thinning Hair with Niacin and Castor Oil : Beauty & Personal Care](https://m.media-amazon.com/images/I/61YoQpzXWCL.jpg)