Spray on Skin

Biomedical scientists have 
created a device that sprays stem cells onto wounds, helping them grow a new, healthy layer of skin in as few as four days. Biotech firm Renova­Care recently obtained a patent for the ­SkinGun and has used it to successfully treat dozens of burn patients in trials. While the device still needs FDA approval, it could help eliminate the painful and scarring process of skin grafting.