Piboo
My shelf

Round Lab Birch Juice Mild-Up Sunscreen

Ingredients and claims, checked

Product photo of Round Lab Birch Juice Mild-Up Sunscreen

Last checked September 16, 2026

Mid-range for sunscreens

No store we checked ships to the US yet. Here's where it's sold:

We don't earn anything from these links. If that ever changes, we'll label the link.

What is it like at a glance?

What the ingredients do

Hydration leads, with 4 of 35 ingredients. It also contains Zinc Oxide.

Hydration
4
Softening
3
Moisture seal
3
UV filter
1

By skin type

  • DryGood fit
  • OilyUse with care
  • CombinationNeutral
  • SensitiveGood fit

Piboo’s rating from user reports.

Worth knowing

  • Contains essential oil
  • Has a fungal-acne trigger

Made for

What is this product?

What to expect
It's registered in Korea as a functional cosmetic for UV protection.
Key ingredients
Zinc Oxide, Betula Platyphylla Japonica Juice 0.1%, Glyceryl Glucoside
When
Morning

An SPF50+, PA++++ mineral sunscreen made with birch sap. It comes in a 50 ml size.

Who is it for?

Less suited to

  • Dehydrated oily skin

What's good, and what to watch for?

Good points

  • Contains Betula Platyphylla Japonica Juice 0.1%
  • Glyceryl Glucoside and Hyaluronic Acid add moisture
  • Registered as a UV-protection functional cosmetic

Watch-outs

  • Contains essential oil (Pinus Sylvestris Leaf Oil)
  • If you get fungal acne: Saccharomyces Ferment Filtrate, Polyglyceryl-2 Dipolyhydroxystearate

How do you use it?

Where in your routine
Final morning step, after skincare and before makeup
Pairs well with
  • A water light hydrating layer underneath
  • Reapplication by the same product rather than a powder

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Tap a name to read about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary.

Key ingredientWorth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

Our research flagged these as worth a closer look, but we could not find them by name in the list above: Chamomilla Recutita (Matricaria) Flower Oil

What the claims add up to

You can expect:
sun protection
Only partly backed:
calmer skin (amount unknown) · clearer-looking skin · better hydration (amount unknown)
Don't count on:
less shine
Free of:
the ingredients it lists
See each claim, checked (36)

Claims, checked

  • UV-blocking functional cosmeticbacked by evidence
  • German Derma Test EXCELLENT rating certificationbacked by evidence
  • Certificate for the Cosmetic product ROUND LAB BIRCH JUICE MILD-UP SUNSCREEN Dermatological test on humans in 2022 Study number: 2201113807backed by evidence
  • UVB protection index SPF 50+backed by evidence
  • UVA protection index PA++++backed by evidence
  • Take an appropriate amount and apply evenly at the final step of skincare or 30 minutes before going out.backed by evidence
  • To protect forests, this product is made with an FSC-certified paper box and soy ink.backed by evidence
  • 30 months before opening, 12 months after opening (Products with more than 18 months of remaining shelf life from the shipping date will be shipped sequentially.)backed by evidence
  • Korea Kolmar Co., Ltd. / Seorin Company Co., Ltd.backed by evidence
  • SPF 50+ PA++++backed by evidence
  • Daily sunscreen, gentle even on sensitive skin with zinc mineral sunscreen!plausible, not tested
  • Moisture is a bonus! Hydrating mineral sunscreenplausible, not tested
  • Deeper moisture with glyceryl glucoside, which opens the moisture channelplausible, not tested
  • A moist cream type that absorbs smoothlyplausible, not tested
  • #LowIrritation #SafeMineralSunscreenpartly backed
  • As a mineral sunscreen composed of zinc oxide that has a broad UV protection range and is even gentler on the skin, it helps provide thorough UV protection as well as soothing and protecting sensitive skin.partly backed
  • Non-nano mineral sunscreen without worries about absorptionpartly backed
  • Non-nano particle analysis test (Korea Testing & Research Institute | 22.1.26~22.2.14)partly backed
  • Dermatic AC 3 [ Patent No.: 10-1332215 ] Cosmetic composition for improving acne and enhancing immunity, containing a complex fermented extract of cedar and lotus leaf as an active ingredient.partly backed
  • Powerful sun care confirmed by clinical trialspartly backed
  • UVA (PFA) and UVB (SPF) protection index human application test, Korea Skin Science Research Institute | 21.12.27 ~ 22.1.28partly backed
  • The sap of Inje birch trees, grown imbued with the refreshing spirit of cool breezes, is rich in amino acids and minerals, supplies moisture to dry skin, and maintains moist skin.partly backed
  • We join the movement to save the earth by excluding UV-blocking ingredients that harm marine ecosystems and coral reefs.partly backed
  • It's not a dry and stiff mineral sunscreen! With a moisture-rich cream formulation, it offers smooth spreadability and a fresh finish as standard, and even delivers a natural tone-up effect.partly backed
  • It is an inorganic UV blocker composed of non-nano particles that reflect UV rays on the skin surface, so it is not absorbed into the skin and can be used with peace of mind.overstated
  • Dermatic AC, a patented ingredient effective in soothing the skinoverstated
  • Having earned the EXCELLENT rating from a strict German skin science research institute, even sensitive skin has no worries about irritation.overstated
  • Glyceryl glucoside, a key ingredient of resurrection plant, activates aquaporin, the water channel in the skin, helping to supply powerful moisture.overstated
  • The soothing patented ingredient quickly calms skin that has become sensitive to external irritation and also cares for excess oil and sebum.no supporting source found
  • Packed with refreshing Inje birch tree moisture to keep you hydrated all day longno supporting source found
  • Synergy of vitamin C and hyaluronic acid! It forms a vita moisture film on parched skin that has been stressed and lost moisture from external environments, creating moist and vibrant skin.no supporting source found
  • Safe, Adherent Mineral Sunnothing specific to check
  • Peace of mind again with the German Derma Testnothing specific to check
  • Recharge moisture vitality with VitaHyaluronic acidnothing specific to check
  • Clean sun care with the ocean in mindnothing specific to check
  • When you need rising moisture, a moisture line that recharges tired skin.nothing specific to check

We quote each claim exactly as the brand published it, then check it against the ingredient list and the brand's own documents.

How we check claims

What else is worth seeing?

Products we read alongside this one.