To flat iron natural hair, deep condition the hair, then blow dry it on a low heat setting. Apply a heat protectant to the hair, and set the flat iron to the lowest setting possible. Press your hair with the flat iron in sections, from the root to the ends.
- Wash and deep condition the hair
Wash the hair with a moisturizing shampoo, then apply a deep-conditioning treatment. Leave the conditioner on the hair for at least 30 minutes to moisturize and strengthen the hair.
- Blow dry the hair
Blow dry the hair until it is completely dry, using the lowest heat setting possible to avoid heat damage.
- Apply a heat protectant
Apply a small amount of a heat-protectant product to the hair. You can use a store-bought heat protectant or natural option, such as grapeseed oil or shea butter.
- Set the heat on the flat iron
Use a flat iron with a temperature-control gauge, and set it to the lowest heat setting that straightens the hair. Aim for a temperature between 300 and 325 degrees Fahrenheit.
- Divide the hair into sections
Divide the hair into large sections using hair clips. Start with a section at the back of the head, and divide out smaller sections of hair that are no more than 1 inch wide.
- Flat iron small sections of hair
Press a small section of hair between the two plates of the flat iron, starting from the root and sliding down to the ends. Continue flat ironing small sections of hair, working from the back of the head to the front, until the entire head of hair is straightened. Avoid pressing each section of hair more than once with the flat iron to prevent heat damage.