A nano ring is a tiny aluminum or copper ring (around 90% smaller than a micro ring) used to attach nano tip hair extensions to your natural hair. Nano tips are very fine strands of extension hair, tipped with a tiny metal loop or wire, which fits snugly inside the nano ring. Advantages of Nano Ring Extensions Almost undetectable, even in very fine hair No glue, heat, or harsh chemicals Hair and rings can be reused several times Scalp-friendly and gentle on natural hair Easy to remove and reposition Can be washed, styled, and colored (if human hair)