Indoor SPF – Do You Really Need It?

Posted by Skinsider Team on 9th May 2025

With the growing awareness about skincare, SPF is no longer just something we think about when we step outdoors. But do we need to protect our skin indoors, too? The answer is yes, and here's why!

The Blue Light Threat

Blue light, emitted by screens like your phone, laptop, and even indoor lighting, has become a hot topic in the world of skincare. While it doesn’t cause sunburn like UV rays, prolonged exposure to blue light can accelerate the breakdown of collagen and elastin in the skin, leading to premature aging. In fact, studies have shown that blue light can penetrate deep into the skin, which is why it's becoming an essential factor to consider when choosing a sunscreen.

Window Exposure

Did you know that even sitting near a window exposes you to UV rays? While glass can block UVB rays (the ones responsible for sunburns), it allows UVA rays to pass through, which contribute to skin aging and damage. So even if you're indoors and near a window, you’re still at risk for these harmful effects.

When SPF is Still a Must

The key to protecting your skin indoors is using SPF – yes, even if you're not stepping outside. Whether you’re in front of a screen or sitting near a window, applying SPF is crucial for preventing skin damage and maintaining a youthful, healthy complexion.

One of the easiest and most effective ways to apply SPF is with a sunstick. These handy, no-mess products are perfect for quick application throughout the day. Plus, they’re travel-friendly, so you can toss them in your bag and apply on the go without worrying about messy creams or lotions.

Our Top Korean SPF sticks Picks

LAGOM Airy Velvet Sunstick SPF50 PA+++ – This sunstick offers high protection and a velvet finish that leaves the skin feeling smooth and matte, making it perfect for all-day wear indoors.
SKIN1004 Madagascar Centella Hyalu-Cica Silky-Fit Sun Stick – Infused with Centella Asiatica, this sunstick not only protects but also soothes and hydrates, ideal for those who spend long hours in front of screens.
Beauty of Joseon Matte Sun Stick: Mugwort + Camellia – This sunstick delivers a unique combination of Mugwort and Camellia to calm and hydrate while offering high protection. Perfect for those with sensitive skin.
Manyo Hyaluron Hydrating Sun Stick 18g – This hydrating sunstick is packed with hyaluronic acid to keep your skin moisturized, making it great for dry skin types or for those in air-conditioned spaces.