Basically I'm 21 and have difuse thinning on top and particularly at the hair line. I've tried a transplant almost nine months ago and so far I've seen little to no results. If I style my hair right it looks fine but I'm constantly worried about it and hardly ever go out without a hat on. I'm thinking about getting a system, at the moment it seems like the best option but I just have a few questions. I want to go for a longish sort of Zac efron style and I was wondering what the best desity would be for that? also if i still have quite a bit of hair left on top, I realise I'll have to shave it, but does this mean the attachment won't be as secure? Any help on this would be greatly apreciated!

Cheers.