Strand by Strand Extension is the secret to amazing European extensions, which includes great lengths, strand by strand infusions, micro links extensions, and coco larue links extensions. Strand by strand Great Lengths extensions are applied to small hair sections to increase fullness and length. Specially formulated hair adhesives are used to secure the bond. This method allows the hair to move more naturally. With proper care this method can be worn 4 to 6 months.The hair we used to do strand by strand is 100% human hair extensions Rockville, and the hair source of our strands are from India. This is the finest source of virgin hair available in the marketplace that is most compatible with Caucasian and European hair textures.