Redness on my knees, around the follicle area? HELP!?

Okaay, well Im 14. Ever since I started shaving just below my kneecap. There has always been a red patch around my follicles. Ive been told its razor burn, rash, razor bumps, and more. Ive tried not shaving, waxing, different creams. Nothing works, it seeems like there getting more irritated. I really need some help! Every morning before school I put make-up powder over them. I have no confidence. I just want normal legs like every other girl. I even though about killing myself. Its been going on for like 4 months. Help me!