Pros

  • Lightweight and hydrating lotioike formula that absorbs quickly without feeling greasy.
  • Leaves no white cast or streaks, even when applied thickly, which is great for all skin tones.
  • Provides strong SPF 45 sun protection while also delivering excellent moisture, perfect for dry to normal and sensitive skin types.
  • Comfortable and norritating, suitable for sensitive skin and eczema-prone skin, especially in winter.
  • Acts as a smooth primer that evens out skin texture and blurs minor imperfections under makeup.
  • Fragrancree or has just a very mild scent, avoiding the typical heavy sunscreen smell.
  • Consistent performance even in overcast or rainy weather conditions.
  • Comes in a convenient ack, making it a good value for daily use.
  • Loved by many users from the very first use with strong recommendations for continued use.

Cons

  • May feel too heavy or oily for oily or combination skin types; users with these skin types might find it less comfortable.
  • The American version available is thicker and leaves a greasy feeling for about an hour, with a stronger sunscreen scent, making it less favorable compared to the Korean version.
  • Some users report the texture is thicker than typical hyaluronic acid sunscreens, which might not suit everyone.

Bottom Line

The ROUND LAB Birch Juice Moisturizing UV LOCK SPF 45 is a superb choice if you’re looking for a hydrating, lightweight sunscreen that doesn’t leave a white cast and works well for sensitive or dry skin. It’s especially recommended for those who want both effective sun protection and moisture without irritation or heaviness—just note it might be a bit too rich for oily skin types. If you want the best experience, seek the Korean version over the American one, as it’s thinner, less greasy, and has minimal scent. For oily skin or a lighter feel, you might consider exploring other Korean sunscreens with a more matte finish, but this product definitely nails the hydration + protection combo.

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