The Ultrax Labs Hair Surge Caffeine Hair Loss Hair Growth Stimulating Shampoo is a highly rated shampoo that helps promote hair regrowth. It contains caffeine, which has been shown to stimulate hair follicles and promote regrowth. The shampoo also includes other ingredients that nourish the scalp and improve hair thickness. It is suitable for both men and women and can be used on all hair types. The Ultrax Labs Hair Surge Caffeine Hair Loss Hair Growth Stimulating Shampoo is a popular choice for those looking for a shampoo that supports hair regrowth.