Generally, you'd want to distance your hair from any heat tools as it can fry your hair beyond repair. If you can't avoid it, use the lowest heat possible and always apply a heat protectant.

Oh and this also applies to the sun: Avoid staying under the sun (especially during summer) and always wear a hat or use an umbrella to shield your hair.

Try: Alterna Caviar Anti-Aging Restructuring Bond Repair Leave-in Heat Protection Spray, $32