On average we lose 100 strands of hair a day. This is relative to how much hair you already have. For example, if you have thicker hair, you’ll lose more, if your hair is fine, you’ll lose less. Pretty straight forward. At the end of each follicle’s life cycle it will sit loosely in your scalp until it’s moved about enough to finally fall out so if you only wash or comb your hair once or twice a week then more hair will come out at once.
If you’re finding that you’re losing more than usual there could be a few reasons why.