Hello.. I was wondering if anyone out there can help me.. I want to striaghten my hair can someone tell me how to do it properly.. I end up with dry hair every time I try it even if I apply a serum.. what's the proper procedure?

Use a moisturising shampoo and conditioner. Apply a deep intensive conditioner at least once a week or even a hot oil treatment.
Apply a blowdrying aid such as Wella's Sleek Wonder or Tigi's Seriously Straight. Blow dry the hair in sections using a paddle or round brush.
After you have blowdryed your hair, glide straighteners through the hair in sections. Apply a little serum to the finished look.