Smart Necklace Tracks UV Exposure to Protect Your Skin

Protecting your skin from harmful UV rays just got a whole lot easier thanks to a stylish new piece of jewelry that does the watching for you.

Stacy Salvi, who spent eight years at Fitbit through its Google acquisition, founded The90 to create The Gem. This smart necklace tracks UVA and UVB exposure in real time, whether you're walking outside or sitting by a sunny window at work.

The round pendant houses sensors that measure UV rays as they hit your skin throughout the day. It sends this data to a companion app that builds a personalized profile based on your unique skin needs.

The app does more than just collect numbers. It provides practical guidance like when you've hit your personal UV threshold, reminders to reapply sunscreen, and safe windows for sun exposure based on your activity.

The technology addresses a real health concern. UV exposure remains one of the leading causes of skin damage and related health issues, especially during summer months when people spend more time outdoors.

Why This Inspires

The Gem represents a shift in how we think about preventive health care. Instead of reacting to sunburns or skin damage after the fact, people can now take proactive steps throughout their day based on actual data.

This kind of personalized health monitoring makes sun safety accessible and automatic. You don't need to guess whether you need more sunscreen or calculate how long you've been outside. The necklace does the work while you focus on enjoying your day.

Early adopters can purchase The Gem for $200, with the regular price set at $300. The device joins a growing category of UV monitoring tools, though it stands out as the first designed as everyday jewelry women actually want to wear.