sorry late reply. don't have as much time lately. It's really moot to say anything if you believe a direct DHT effect. A direct mininturizing effect of DHT AND genetics is exactly what Merck wants you to believe because it will be moot and useless to discuss anything else but kill DHT and that no amount of and no other method work. That's the reason why I can't get my mind off the presence of people who push the theory and even intimidate others who present alternative and scientifically supported theories. Are they working for Merck? Remember DHT should have no effect on your hair if you're not genetically programmed to respond to it in that manner. AND remember what I said about how trashy genetics is. Look up epigenetics in Wikipedia and you'll know our genes merely respond to our environment. Blood viscosity.. No effect whatsoever. Simple answers: There won't be a horseshoe pattern. But drinkng more water might have some small effect but I'd go for coffee or tea. Some studies suggest a logical positive effect. Drinking NOT applying it on the scalp.