Do I Need To Wear Sunscreen Indoors?

Most individuals are aware of the following facts: Because the planet is round, sunscreen is required. However, the latter is occasionally questioned, particularly during the colder, grayer months of the year and on days when the sun is hidden. But if there’s one thing that cosmetic dermatologist Dr. Michele Green wants us to remember, it’s that the need for SPF is constant, regardless of the weather, season, or temperature.

“The sun is the leading source of wrinkles, according to hundreds of studies,” she says, adding that while many people don’t apply sunscreen all year—whether they’re inside or outside—one it’s of the most essential things they can do for their skin. Furthermore, Green points out that even on gloomy days, when it’s chilly and pouring, and even through windows, the sun’s rays may penetrate through, therefore it’s necessary to use SPF.

Of course, if you’re still not convinced about the necessity for constant SPF, we’ve highlighted why it’s critical to use sunscreen both outside and indoors with Green’s aid.

Is Sunscreen Required for Indoor Use?

Yes, is the quick answer. UV rays may travel through glass windows, as Green noted. As a result, it’s critical to apply sunscreen both inside and outside your home. In fact, most UV hand aging happens while driving, thus using an SPF-infused hand lotion like the Supergoop! Hand Screen SPF 40, $14, is an excellent choice for people wishing to preserve their skin and avoid fine lines and wrinkles before they appear.

But keep in mind that it’s not just your hands that are in danger. SPF should be used on all exposed parts of the skin, notably the face, neck, and chest, according to Green.

Does Sunscreen Protect Against Blue Light?

While not all sunscreens block blue light (the light generated by displays such as your phone, laptop, or television), those containing zinc oxide and/or titanium dioxide do. Researchers discovered that sunscreens with microfine titanium dioxide provided much greater protection against both UVA and blue light than the other SPFs in a clinical experiment published in the British Journal of Dermatology.

Are you perplexed as to what titanium dioxide is? Physical sunscreens has the minerals titanium dioxide & zinc oxide. To recap, physical sunscreens rest on the skin’s surface, bouncing light off the surface to shield it from harmful penetration, whereas chemical sunscreens attract light within while still providing protection by absorbing the rays.

Do You Need to Reapply When You’re Indoors?

Johns Hopkins medical specialists recommend reapplying sunscreen every two hours as a general guideline. However, if you’re indoors and away from windows, you won’t need to reapply. Because you’re less likely to be sweating or swimming indoors, your sunscreen is less likely to be ruined after its initial application. But keep in mind that this does not imply you should stop using SPF.

The Takeaway

Sunshine is a lovely thing for which most people are thankful. Regardless of your gratitude, protecting your skin from it is critical. While wearing SPF before a day in the sun is a no-brainer, many individuals struggle with the fact that SPF is just as important indoors—especially with society’s growing infatuation with screen time.

UV and blue light damage, according to Green, are cumulative. This means that the more you’re exposed to it, whether through hours of outdoor activities or days of indoor streaming, the more vulnerable your skin becomes. As a result, applying sunscreen indoors is no longer a point of contention. It is required.

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