Using a hair mask can help to moisturize and soften natural curly hair, making it easier to straighten. Here are the steps to straighten natural curly hair with a hair mask:

  1. Wash your hair: Start by washing your hair with a moisturizing shampoo. This will help to remove any buildup or product residue from your hair.

  2. Apply the hair mask: Apply a hair mask to your hair, focusing on the ends and any particularly dry or damaged areas. Work the mask through your hair, making sure to distribute it evenly.

  3. Comb your hair: Comb your hair with a wide-tooth comb to detangle it and distribute the hair mask evenly.

  4. Cover your hair: Cover your hair with a shower cap or plastic wrap and leave the hair mask on for at least 20 minutes. This will allow the mask to penetrate your hair and provide deep hydration.

  5. Rinse your hair: After 20 minutes, rinse your hair thoroughly with lukewarm water. Make sure to rinse out all the hair mask from your hair.

  6. Blow-dry your hair: Use a blow dryer with a nozzle attachment to dry your hair. Direct the airflow downward, and use a round brush to help smooth your hair as you dry it.

  7. Apply a heat protectant: Before using a flat iron or other heat styling tool, apply a heat protectant to your hair. This will help to minimize heat damage and keep your hair healthy.

  8. Straighten your hair: Use a flat iron to straighten your hair in small sections. Take a small section of hair, and clamp the flat iron down on it near the roots. Slowly slide the flat iron down the length of your hair, repeating as necessary until your hair is straight. Work in small sections to avoid damage to your hair.

Remember that heat styling can be damaging to your hair, so it's important to use a heat protectant and avoid excessive heat exposure. Additionally, it's important to maintain a healthy hair care routine, including regular conditioning and moisturizing, to keep your hair healthy and strong.