On sale for £5 now on Amazon (Image: Amazon) According to the reviews, dandruff isn’t the only issue this shampoo can treat. Many of the Amazon reviewers were amazed at how this product helped with their fungal acne, with one user saying: “I did this every other day for a week and the area completely cleared up!”. Another reviewer was amazed by how effective the shampoo was with their skin, saying “I’ve been struggling with fungal acne (forehead Malassezia) for years now. This product is the ONLY thing I’ve found to work." If you’re still on the fence about trying out the shampoo for yourself, it’s now on sale for £5 and you can