What is dht blocking hair growth shampoo our dht blocking shampoo is formulated with saw palmetto a proven dht blocker that can reduce levels of the hormone in the scalp. The shampoo also contains caffeine, argan oil, iron and vitamin b3. Dht dihydrotestosterone is a male hormone that is a by product of testosterone in men that are sensitive to it, dht binds to your hair follicles, leading to hair shrinkage and eventual hair loss. Who can use dht blocking hair growth shampoo men with mild hair loss that are experiencing the early signs of a receding hairline and hair loss in the crown area. Ingredients what are the active ingredients aqua, argania spinosa kernel oil, citric acid, citrus reticulata tangerine fruit extract, cedrus deodara wood oil, cocamidopropyl betaine, glycerin, guar hydroxypropyltrimonium chloride, hibiscus syriacus bark extract, lauryl glucoside, magnesium nitrate, vitamin b3 niacinamide, peg 12 methyl glucose dioleate, phyllanthus emblica extract, polyquaternium 10, oil rosmarinus officinalis leaf oil, salvia officinalis oil, sodium chloride, sodium lauroyl sarcosinate, saw palmetto serenoa serrulata fruit extract, ubiquinol, caffeine, biotin, disodium edta, iron ferrous gluconate, parfum.ingredients usage how to use sons dht blocking hair growth shampoo use once a day as part of your everyday shower routine. Massage into the scalp and leave in for approximately 60 90 seconds before rinsing out. Usage warnings 0warnings