Using this five - in - one hot air comb is a breeze. First, make sure your hair is dry or slightly damp. Then, turn on the comb and select the appropriate heat setting according to your hair type. For curly hair, slowly move the comb through your hair in a circular motion. To straighten, simply glide the comb down your hair smoothly. When you're done, turn off the comb and let it cool down completely before storing. Keep the comb clean by wiping it with a soft cloth regularly. Avoid using it on wet hair to prevent damage to the comb and ensure your safety.