Korean SPF Guide: How Much, How Often, and When to Reapply
Posted by Skinsider Team on 21st May 2025
In the world of skincare, SPF is non-negotiable. It protects the skin from sun damage, premature ageing, and pigmentation. But how do you apply it properly, how much do you really need, and when should you reapply it? Let’s break down the essentials and bust some common SPF myths while we’re at it.
How to Apply SPF Correctly
The two-finger rule is a great way to measure the right amount of sunscreen for your face and neck. Simply apply SPF along the length of your index and middle finger. For the whole body, you need about 30ml.
One application a day isn’t enough. You should reapply SPF every two hours, especially if you’re outdoors, sweating, or touching your face. For easy reapplication during the day, especially over makeup, sun sticks are a game-changer.
SPF should be the final step in your morning skincare routine, applied to clean, moisturised skin at least 15 minutes before makeup. This gives it enough time to form a proper protective barrier.
What to Avoid and Watch Out For
Don’t mix SPF with your moisturiser, it can dilute the formula and compromise protection. Layering is better: apply moisturiser first, then sunscreen.
Apply SPF not only to your face but also to often-forgotten areas like ears, lips, neck, eyelids, and even along the hairline. These spots are equally exposed to UV rays and deserve protection too.
If your eyes get watery after using SPF, it could be because the formula is too irritating or evaporating into your eyes. In that case, switch to a gentler formula, ideally with mineral filters.
When using cushions or tinted bases with SPF, remember they don’t provide enough coverage on their own. Also, applying SPF after makeup can alter the shade—so it's a good idea to apply a thin layer of SPF before makeup, especially before using a cushion.
And yes—people with darker skin tones still need SPF. UV damage can affect all skin types and tones.
What K-Beauty SPF Products to Choose?
Classic Sunscreens – Your Daily Essentials
Perfect for hydration, light texture, and comfortable daily use:
- Beauty of Joseon – Relief Sun: Rice + Probiotics SPF50+ PA++++
A cult favourite for a reason—lightweight, non-greasy, and free from white cast. Great for calming and hydrating the skin. - Round Lab – Birch Juice Moisturizing Sun Cream SPF50+ PA++++
Enriched with birch juice, ideal for dry or sensitive skin. Delivers long-lasting moisture with a soft glow.
Sun Stick – On-the-Go Reapplication
Convenient for reapplying over makeup or throughout the day:
- Beauty of Joseon – Matte Sun Stick: Mugwort + Camelia SPF50+ PA++++
A matte-finish sun stick, perfect for oily and combination skin. Controls shine without disturbing your makeup.
Tinted SPF – Lightweight Coverage + Protection
Great for natural makeup lovers:
- Heimish – Artless Perfect Cushion SPF50+ PA+++
Combines skincare and makeup in one product with SPF protection and a dewy, even finish. Great for quick mornings or touch-ups.
Lip Protection – Don’t Skip the Lips
- Some By Mi – V10 Hyal Lip Sun Protector
A hydrating SPF lip balm that protects delicate lip skin from sun damage while keeping them soft and smooth.
In Summary
Sunscreen is more than just a product—it’s a habit. It’s the most important thing you can do daily to protect your skin. Whether you prefer creams, sticks, or cushions, the key is consistency. Apply generously, reapply often, and don’t forget the small areas. Rain or shine, SPF is your skin’s best friend.
