The Hair Extensions Raw Materials 100% human hair extensions, Remy hair is gathered from the head of donors in such a way as to keep the hair's cuticles properly aligned in relation to its neighboring hairs. This means the hair remains softer, silkier,and healthier appearance than regular human hair. When washed, it will not mat and tangle. Clip-in human hair extensions is currently the most popular type of hair extension,which is the easiest way to expand amazing length and volume that you can install as often as you like. besides,clip-in method is very gentle to your natural hair.High quality metal clips covered with a layer of soft silicone protect your scalp from damaging feel comfortable than other clip in hair extensions.