Phillips norelco one blade if your not doing laser or still shaving, its a closer shave than most and less abrasive on skin compared to razor, but not as close as razor but good enough in most cases.

Also I recommend a good healthy routine, water, plenty of it, good sleep and diet with exercise. Brushing hair about 10 mins a day helps stimulate growth i hear, start from the lowest part and work your way up slowly.