i did a search as 'mass effect 2 awesome mod' but went through about 5 pages and nothing. It's no trainer but it's the great for renegade/paragon points.
Note: might be smart to save the current code if you want to revert back to it later. Yes, do a search for awesome or mod, it'll turn up. Here you can modify Hair Mesh field with any of the below codes to replace your hair style. Raw > Player > Appearance > Morph Head > Hair Mesh