The company says up to 90% of visible skin aging and premature skin damage is linked to cumulative, everyday UV exposure . UVA rays are associated with long term skin aging and can pass through windows, while UVB rays are more closely connected to sunburn. That makes both types of exposure important, even when someone is not spending hours at the beach. The90 Gem tracks live UVA and UVB data and feeds it into The90 app, where users can build a personal skin profile. The app takes into account...
