Rest assured, you can leave your everyday hair straightener behind and get similar pin-straight results without the extra baggage. Smaller and more compact, mini flat irons can match the heat packed in regular versions, making it well worth the swap.Is it OK to straighten hair every day? According to hair stylists, it is not recommended to straighten hair every day as it can cause breakage, heat damage, and moisture loss. Ideally, you should be flat ironing freshly washed, conditioned hair and heat protected hair no more than 2 or 3 times a week.