VIRGINIA BEACH, Va. — A local nail technician is raising the alarm about a dangerous chemical some nail salons use that could cause permanent damage to your nails. Karen Kahan has worn acrylic nails for years but she didn’t realize those nails were the source of pain. “They would have this tightness as if someone were to put a rubber band around your fingernail. That’s literally what it felt like,” Kahan said. She’s talking about the type of acrylic she used: Methyl methacrylate or MMA. A substance so strong it’s used in concrete, joint replacements and dental work. “MMA is actually used to make bulletproof glass, Plexiglas,” nail technician Diancia DeBerry said. “There’s a great deal that consumers do not know about nail salons.” “Ripped, torn and bleeding,” she said, describing the damage she’s seen. “Also, it can lead to nail deformities where the nail will no longer grow back the same.” In the 1970s, the FDA received a litany of complaints about MMA. The agency oversaw recalls but there’s no specific regulation prohibiting the use of MMA in cosmetic products. “For this amount, I paid $6,” DeBerry said gesturing to a bottle of MMA. “And this amo...