how to curl hairs with flat iron

Start with clean and dry hair.

Make sure to start with completely clean and dry hair. Wet hair won't curl at all and damp hair won't curl as well. Even if you have one of those magical wet-to-dry hair straighteners, it’s best if you have dry hair. Dirty hair also won’t hold its shape very well, so make sure you’ve washed it in the past 24 hours. If you're blow-drying your hair first, use mousse. The extra volume will keep your hair from looking too flat as you curl it.

Use a thin flat iron.

Your straightener should be about 1 to 2 inches (2.5 to 5 cm) in width from plate to handle and have rounded edges, otherwise, it won’t form smooth curls. A flat, paddle-style iron also won't do curls. It’ll be much harder to hold and wrap if you have this kind of straightener and the hair won’t want to stay in the right place.

Make sure you’ve got a good quality flat iron.

The best work faster, make your hair smoother and do less damage than poor-quality irons. They can have a big impact on things like shine and the consistency of curls. Heat the iron up to the minimum temperature you need for your hair. If your hair is fine and thin, stick to the low end of the dial at below 300 degrees. Normal hair can be ironed at 300 to 380. You can turn it up to 350 to 400 if your hair tends to be thick, coarse, or frizzy.

Apply heat protectant.

Applying a heat protectant or a thermal spray creates a protective barrier between the hair and the iron so that the hair doesn't "frizzle" and burn. Spray all over your hair – no need to comb, as it should mist on and dry quickly. If you have thick hair, spray it on each section before you tackle it. If you just spray it on the top of all your hair, it won’t hit the bottom layers. Also be sure to comb out any tangles in your hair before applying heat.