Suggest Treatment For Stop Hair Growth In Under Arm

hellow doc.im when i was 12 years old,im getting having hair in my underarm.then i start shaving.im curios to become dark my underarm.then im shy to see people and my friends im having hair in my underarm.and when im not shave my underarm it smells bad.doc what will i do to not go dark my underarm and stop grow hair.doc plc help me to my problem