Stop guessing your UV exposure.

Stop guessing your UV exposure.

Own your light

Own your light

Order Now

Order Now

Limited units available, pricing only available while supplies last

"I Don't Put My Name On Anything I Don't Fully Believe In."

✦ Lauryn Bosstick, The90 Investor and Creator of the Skinny Confidential.

Introducing, The90 Gem.

The first personal sun intelligence system that measures the UV exposure you can't see so you can protect your skin's future in real time.

Personalized to your skin

Personal recommendations based on your unique skin profile, genetics, habits, and sensitivities.

Tracks the rays that matter

Measure both UVA (aging) and UVB (burning) in real time – including the exposure that quietly adds up through windows, cars, errands, and more.

Built for everyday life

Wear it with your existing jewelry, pair the Gem with The90 app, and get guidance on when it's time to reapply, cover up, or get out of the sun.

Meet The Gem

The jewelry-inspired UV sensor that tracks what your skin actually experiences, so you can protect how you age while harnessing the health benefits of the sun.

Meet The Gem

The jewelry-inspired UV sensor that tracks what your skin actually experiences, so you can protect how you age while harnessing the health benefits of the sun.

Gold

Pre-Order Special Pricing

The90 Gem

The90 Gem

Gold

Gold

The personal UV sensor and connected app that shows you exactly what your skin is exposed to and what to do about it – so you can age smarter in the sun.

Orders Expected to Ship Early June

Orders Expected to Ship Early June

$199

$199

$299

$299

Save $100

Captures the UVA + UVB rays that affect your skin in real-time

Captures the UVA + UVB rays that affect your skin in real-time

Syncs seamlessly with The90 app to turn your cumulative sun exposure into personalized skin and aging insights

Syncs seamlessly with The90 app to turn your cumulative sun exposure into personalized skin and aging insights

Alerts you when it's time to reapply sunscreen or seek shade

Alerts you when it's time to reapply sunscreen or seek shade

Free delivery

Free delivery

Free delivery

30-day return policy

30-day return policy

30-day return policy

1-year warranty

1-year warranty

1-year warranty

Designed to Go Wherever You Do

Designed to Go Wherever You Do

Made to look as good as it performs, The90 Gem blends seamlessly into your everyday jewelry stack, so you can wear it from workdays to workouts to weekends in the sun and everything in between.

Made to look as good as it performs, The90 Gem blends seamlessly into your everyday jewelry stack, so you can wear it from workdays to workouts to weekends in the sun and everything in between.

Indoor

Indoor

Outdoor

Outdoor

Active

Active

Lounging

Lounging

See What Your Skin Can't

See What Your Skin Can't

Stop guessing what your skin needs. The90 app shows you exactly what your UV exposure looks like in real time, then tells you what to do about it.

Stop guessing what your skin needs. The90 app shows you exactly what your UV exposure looks like in real time, then tells you what to do about it.

Know your sunburn window

See your estimated time to burn based on real-time UVB exposure (rays that cause sunburn), sunscreen use, and skin profile.

Track what silently adds up

Monitor UVA exposure (rays linked to premature photoaging and long-term skin damage) even when you can't feel or see it.

Build smarter sun habits

See your daily sun exposure patterns, track how your habits add up, and get personalized recommendations on how to protect your skin over time.

Built With Leading Skin and UV Expert

Dr. Richard Weller

World Renowned UV Specialist

Chief Medical Officer

90% of visible aging is caused by UV exposure.

90% of visible aging is caused by UV exposure.

The problem? Most of it is invisible – and happening when you're not realizing it. If you can't see your UV exposure, you can't fully protect and preserve your skin.

The problem? Most of it is invisible – and happening when you're not realizing it. If you can't see your UV exposure, you can't fully protect and preserve your skin.

Own your light. Protect your glow.

Gold

Gold

Pre-Order Special Pricing

The90 Gem

The90 Gem

Gold

Gold

The personal UV sensor and connected app that shows you exactly what your skin is exposed to and what to do about it – so you can age smarter in the sun.

Orders Expected to Ship Early June

Orders Expected to Ship Early June

$199

$199

$299

$299

Save $100

Captures the UVA + UVB rays that affect your skin in real-time

Captures the UVA + UVB rays that affect your skin in real-time

Syncs seamlessly with The90 app to turn your cumulative sun exposure into personalized skin and aging insights

Syncs seamlessly with The90 app to turn your cumulative sun exposure into personalized skin and aging insights

Alerts you when it's time to reapply sunscreen or seek shade

Alerts you when it's time to reapply sunscreen or seek shade

Free delivery

Free delivery

Free delivery

30-day return policy

30-day return policy

30-day return policy

1-year warranty

1-year warranty

1-year warranty

Frequently Asked Questions

How long will pre-order pricing last?

When can I expect to receive my order?

Does the app have a monthly fee?

What’s included in the 1-year warranty?

How long will pre-order pricing last?

When can I expect to receive my order?

Does the app have a monthly fee?

What’s included in the 1-year warranty?

Sign up for pre-order updates, skin and sun education, exclusive offers, and more.

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By subscribing you agree to with our Privacy Policy

and provide consent to receive updates from our company.

©

2026

The90. All Rights Reserved

Own your light™

The Gem

Personal UV Sensor + App

$199

$299

Order Now

The Gem

Personal UV Sensor

$199

$299

Order Now