You don't need protein powder to drop bodyfat, but you will need to cut "junk" food out of your diet to start. Unless you have a serious medical condition, at 20 years old the extra bodyfat you carry is most likley due to a shitty diet. I'm guessing you eat to much calorie dense, nutritionaly worthless foods. You don't need to worry about the right protein powder, much less HGH. Eat clean foods-as much as you want. It's much harder to overeat when your're eating basic plain foods like: eggs, non-fat milk, tuna, steak, chicken, beans, rice, oatmeal, broccoli, asparagus, spinach, apple, bannana, and many more. Cook with a few tablespoons of olive oil and use spices to make these foods tasty (if you must). Don't add cheese and sweet buttery crap to these foods, because this adds a shitload of extra calories from fat and carbs (which you don't want). Try this first, than ask for more help, or not.