KSD Flat Iron Free Express smoothing treatment provides comparable results to traditional salon Brazilian-type keratin treatments when it comes to reducing curl & wave, removing frizz and smoothing hair – but without the harmful chemicals AND without a flat iron! And, because Keratin Salon/Direct smoothing treatments work from the inside out to strengthen and fortify hair, with Keratin Salon/Direct hair is not only smoother and straighter, but also healthier looking and more manageable. Go from straighter to curls and back again at any time. Four 4 oz Treatments 2 year shelf life