Keri Hilson recently posted a picture to her Instagram profile, @KeriHilson, rocking non- chemically treated hair with two long cornrows (which we assume are hair extensions.) Get the Keri Hilson cornrows with Honey Hair Care's light yaki Malaysian Human Hair extensions.Chemically treating hair all the time can cause damage. Damage can causes hair to thin, or even break off. Constantly perming hair can cause irreversible chemical damage. If you want the length without the damage, try applying hair extensions to your natural tresses, instead of perming natural hair before hair extension application.