Step 1:

Wash hair with a sleek, straightening shampoo and conditioner. Be sure to condition hair from the root to the cuticle.

Step 2:

Spritz a de-frizzing, heat protecting, leave-in conditioner all over hair and comb through.

Step 3:

Flip hair over to blow-dry and bring head up when hair is almost dry. Blow-dry at a downward angle, using a round brush to help straighten. Finish drying the "cool" setting to tame any leftover flyaways.

Step 4:

Use a flattening iron for extra sleekness, or simply finish with a shine spray.