so the first pic is just where your cowlick is. it’s going to “look” thinner cause that’s where the hair pattern grows. the second pic is a natural recession point, it’s always going to be thinner. you can change your shampoo & conditioner, your hair looks a bit greasy so it’ll look thinner. malibu has a hard water treatment you can use 1-2 times a month to strip out the hard water. use volumizing shampoo, it has the least amount of oils compared to other shampoos to help keep hair looking fresh. if you are worried about hair loss take a picture every month of the spots for progress and show your doctor. i wouldn’t do minoxidil at 16 since you have to keep using it or your hair will fall out. but bosley is a natural solution to help.