The great thing about human hair is that it is made of mostly protein so you can revitalize the hair using good protein conditioners for structural damage, like split ends, or a good moisturizer if the hair feels dry. The nice thing about the hair being on a doll is that you can put the moisturizing conditioner on her hair and leave it in all night long. When you rinse it the next morning it feels amazing. We have also kept the long ends at the ends of the hair so that after a year or so you could get the dolls hair trimmed and still have plenty of hair to play with. We are in the process of patenting the product and the way we attach the hair inside the doll’s head.