Is it possible to clone ones skin and use it for scar treatment?

Possibly. There is a new product that has been available for a few months called laviv (azficel). The technique involves taking small 3mm skin samples from behind the ear, sending them to a lab, growing up the cells (fibroblasts) for 3 months, then sending them back to be injected into the nasolabial folds/wrinkles. Results are good. I suspect it may become available to deal with scar treatment.