5,KOCONI Nano Ring Hair Extensions can be straightened, curled, washed and restyled as you like. But do not suggest dyeing into lighter color, because unprofessional dyeing process would shorten hair lifespan and affect hair quality. 4,The longer hair is, the thinner hair extensions becomes. Recommend 2-3 packs for full head with 14"-20", 3-4 packs with 20"-24". 3,Nano Ring Human Hair Extensions: 14-22inch, 1g/strand, 50strands.100% Remy human hair, no synthetic hair mixed, no tangle, no shedding , soft with natural shining.Due to different lights and screen, color may have a little color differences between the real item and the pictures. 2,KOCONI Nano ring hair extensions is made of remy real human hair, healthy, soft, smooth, It is suggested to install by professional hairdresser for a beautiful outcome. 1,Nano ring extensions are as small as a ballpoint pen nib,Being the most undetectable method of hair extensions installation with a size of only 3mm.it make hair looking more seamlessly and natural. No heat, no glue, virtually harmless to your own scalp.