You can wear it straight or wavy. Get any style you want. The hair comes straight but once you wet it and add product you can make it have a natural wave. To remove the wave, simply wet it again, blow it out and voila its straight. Repeat as often as desired. Important Instructions to follow when using seamless tape extensions. 1.Do not wash hair for 3 days after application. Washing your hair before the glue has had time to set may cause the extensions to slip out. 2.Do not wash hair in hot water for the first week. Use only tepid or cold water. 3.Do not stand under the shower head when washing hair. The beating of the water penetrates the tape and may cause it to slip out. 4.Do not brush hair extensions when wet. Always hold the top of the extensions when brushing your hair. 5.Do not apply conditioner or oils directly on tape tab. Only condition the tips of the hair extensions. 6.You may style as desired with any curling iron, flat iron, or other heating device. NOTE: Frequent use of high heat devices may cause split ends to develop. Deep conditioning treatments are recommended for use on the tips of the extensions when high heat styling is being frequently used.