What causes hair loss?

I'm a teenage girl who's about to turn 18 in a few months. I have long hair. When some of it is put to the front, it's long to my armpits. Well anyways, when I take a shower or get out, my hairs always falling or is on my skin. Like on my arms, sometimes on my legs, or on my back. It's annoying. After i'm through with my shower with my hair soak and wet, I comb my hair with a comb of course. And when the first stroke, a lot of hair is stuck to the comb. Not a bunch, just a lot. This also happens when my hair is dry (not wet). When I brush my hair, it's left with hair on the brush. Then most of the time hair falls on the floor or else. Like on the bathroom sink. So I was just wondering, what causes hair loss? Do I need a special shampoo to prevent this? I'd appreciate it so much if you'd help me out here. Thanks.What causes hair loss?
Well naturally you will always loose hair, almost 80 hairs a day or more. Its common to find hair in your brush. If you find that your hair is coming out very frequently then you could talk to your hair salon. I dont believe that there is a special Shampoo to prevent it.What causes hair loss?
first, check your diet, if your getting a bit too much vitamin A in your diet, your hair may fall out more, and when you brush you hair while its wet, ur hair is more prone to breaking off near the scalp, so you might think its falling out, but your just brushing it when its too wet
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