"I do not use this product, but here is how to get a pin straight look with no product or heat syling:
1) Wash and condition your hair with any shampoo and conditioner you like (other than totally twisted or tousle me softly)
2) Comb through your hair with a wide-tooth comb to remove any tangles
3) Comb through your hair with a fine-tooth comb; this should make it look straight.
4) While your hair dries, comb out the curls and waves with a fine-tooth comb (if you want to speed things up, use a hair dryer).
5) Once your hair has completely dried, your hair should stay straight the rest of the day (mine did). But if you're worried, apply some Set Me Up Gel or while your hair is still wet, Set Me Up Mousse.
When I did this, my hair stayed straight for 2 days without a single wave, and I didn't use any gel or mousse."