Frequently Asked Questions

brightness_medium
How do I know when I've had enough sun for the day?

LogicInk is formulated to help people with sensitive or fair skin stay within safe UV limits as defined by the World Health Organization. If your skin burns easily, you’ll want to apply or reapply sunscreen, cover up or find shade before the last segment turns completely pink. But people of all skin types can be harmed by too much UV exposure. LogicInk helps everyone remember to take action to prevent skin damage.

hourglass_empty
How long does LogicInk last?

LogicInk is designed to measure the cumulative effect of one day in the sun. We do not recommend you use it a second day.

face
Is LogicInk UV safe for children?

Yes! LogicInk is a great way to ensure your children aren’t getting too much sun. The easy-to-read design clearly alerts you when a safe UV limit has been reached. Use LogicInk and help minimize the cumulative effects of sun exposure that start in childhood.

verified_user
Is LogicInk UV waterproof?

Yes! LogicInk's adhesive is gentle on your skin yet resilient enough to last in the water. LogicInk is for people of all ages and lifestyles.

playlist_add_check
Is LogicInk UV compatible with my sunscreen?

We recommend you apply LogicInk on clean, dry skin. Apply sunscreen per your sunscreen's instructions. 

LogicInk is compatible with pure physical sunscreens only (e.g. titanium dioxide or zinc oxide).

When applying a physical sunscreen on top of LogicInk, sunscreen will expire faster from LogicInk's surface than it does on your skin, functioning as an early warning to take action: re-apply sunscreen, seek shade, or cover up. 

phonelink_ring
How can a smartphone enhance the LogicInk experience?

Unlike similar electronic-based products, LogicInk does not require a smartphone to know if you had enough sun for the day. LogicInk is thoughtfully designed with clear changing shapes and bold colors so you can see your UV status with just a glance. An optional mobile app lets you scan your LogicInk "tattoo" –e.g. at the end of the day– to track UV exposure patterns over longer periods of time, among other services to come.