A smart necklace that interprets the sun and fights wrinkles

The latest obsession in wellness is all about protecting yourself from the sun and calculating wrinkles before they even start. The90, a California-based health startup founded by former Fitbit Director Stacy Salvi, recently launched “The Gem,” a $299 smart pendant designed to help women measure real-time UVA and UVB exposure. The high-end pendant necklace captures live UV data and translates it into “actionable sun intelligence” to help users make decisions about sun exposure and sunscreen timing. “We are on the cusp of a skincare revolution,” Salvi says. “We want to empower women to stop guessing and finally own their light, strategically harnessing the sun for optimal health.”