THE CAPTAIN'S BEARD Caffeine Shampoo | Available Online at SkinMiles
Amazon.com : HUX caffeine Shampoo, a hair and beard shampoo with a unique blend of Aloe Vera, invigorating Caffeine, and refreshing patchouli essential oil, to soften cleanse and strengthen your hair, 200ml :
Wild Willies Progro Fortified Beard Wash Shampoo With Biotin and Caffeine, 4 Oz. - Walmart.com
Watermans Hair and Beard Growth for Men
Caffeine liquids: Boost hair growth and care for the scalp | Alpecin