All those who have previously used micro ring extensions can now switch to nano ring extensions. Because this new type of hair extension is gentle to the own hair, the nano rings are so small that they are almost invisible after the application. If the strands have grown out so far that you have to raise them, you simply release the nan orings and set the strands higher. For this purpose, you only need a nano ring plier and new rings. Because these extensions are 1-gram each, you need about 100 strands at normal self-hairs. With dense hair you need about 150 strands.