Reason No. 6: You're not trimming your hair enough
You're trying to grow out your hair, so you've been skipping your trims — makes sense, right? This actually isn't such a good idea, since hair can fray and start to break around six weeks after its last cut, leaving it looking frizzy and dry.
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Reason No. 7: Your diet could be the problem
If you're not getting enough nutrients or vitamins, then it will reflect in the rest of your body. For example, a lack of vitamin B7 can cause brittle hair and nails. Foods rich in B7 include egg yolks, organ meats, fish, meat, dairy, nuts, seeds, spinach, broccoli, cauliflower, sweet potatoes, yeast, whole grains and bananas.
