Yes, because the hair is virgin human hair it can be bleached and dyed. We recommend taking your hair to a professional to avoid over-processing or coloring your hair which can result in shedding or dryness. Once the hair is dyed it is no longer considered "virgin" hair.
Because the hair is sewn onto a weft it is prone to minimal shedding. However, proper maintenance of the hair including usage of wide tooth combs is advised and will decrease the amount of shedding.
Keep in mind, the longer the bundles the smaller the wefts. For lengths 20" and lower we recommend 3 bundles. For lengths over 20" we recommend 4 bundles for a fuller look.