Hello, Im 16 So At The Age When I Want To Party And Stuff, Im Overweight Which Makes My Self Esteem Very Low, But I Have This Dark Patches Under My Arms And Around My Neck. It Looks Dirty And I Cant Wash It Off, Its Really Embarrising, I Wont Wear Vests And Tops Without A Collar. Does Anybody Know What This Is? Or How To Get Rid Of It? X x Thankyou :)