TOWN OF JOHNSTOWN — In the spa technology arena, a Johnstown family-run practice has skin in the game. Inside C3 Medical Spa on North Pine Street are two new devices totaling $500,000 in value. Each multi-application EXION machine is designed to perform deep-tissue skincare treatments with minimal pain. The AI-controlled technology was created in Austrian-owned BTL. It remains a rare find in the national market. "In the cosmetic area and aesthetics, women and men are always looking to find the latest thing that's safe," said Lynda Kearney, director of aesthetics at C3 Medical Spa. "This is the first time I've…