Abstract: The present invention is a non-slip hair accessory that remains secured in the wearer's hair in the position the wearer placed it. The hair accessory includes a support, a hair-engaging strip and a means for adjusting the accessory in the wearer's hair. In one embodiment, the accessory is a flexible headband wherein the support is a fashion strip such as a ribbon or other flexible material, and the hair-engaging strip is attached to, or molded within, the fashion support strip. In another embodiment, the accessory is a hair clip having a decorative support arm, and a hair-engaging strip is attached to, or molded within, the support arm. The hair-engaging strip includes a plurality of parallel rows of uniformly spaced protrusions. In one embodiment, the hair-engaging strip has three rows of protrusions. In the preferred embodiment, the individual protrusions in the two edge rows are spaced an equal first distance from each neighboring protrusion in either edge row.