No, it doesn't work. Several years ago on an episode of Penn & Teller's Bullsh!t they investigated penis enlargement methods to see if any were effective. They checked into the stretching method, penis vacuum pumps, and a medication/supplement that claims to grow a penis. Their experiment went for a few months and was overseen by a doctor who did before and after measurements of erect penis size. In all three methods studied, every one resulted in no change between the before and after sizes. Penis enlargement producs and techniques are all scams at best, dangerous at worst (because some methods involve surgery and can leave the man permanently impotent). 6 inches is well within the average adult penis size range, so be happy with what you have. Learn how to use it right and any future sex partner you have will be happy with it, too.