Dirty combs can weaken your hair which lead to break down.
Wet hairs are more fragile as it can be stretched and broken more easily.
Putting extra pressure while combing results the pulling of hairs which leads to breakage.
Combing from the roots without detangling can cause tangles, knots and breakage.
If your comb has sharp or uneven teeth then it can cause split ends and also damage your hair.
Excessive Combing can leads to irritation in your hair scalp and can be the reason of hair fall.
Using incorrect kind of comb for your hair texture might leads to unnecessary breakage and hair loss.