DESCRIPTION  

Highlights

  • Fragrance-free
  • Pregnancy-friendly
  • Clean ingredients
  • Vegan
  • Dermatologically tested

Benefits

  • Broad Spectrum UVA/UVB Protection
  • Hydrates Skin Like a Daily Moisturizer
  • Leaves Absolutely Zero White Cast
  • Doubles as a Flawless Makeup Primer
  • Soothes Sun-Exposed Skin

Best For

  • Dehydration
  • Dark Spots & Uneven Tone
  • Redness & Irritation

How to Use

  1. Use as the absolute final step of your morning skincare routine.
  2. Squeeze a generous amount (about the length of two fingers) onto your hand.
  3. Apply evenly across your entire face, neck, and exposed areas.
  4. Gently pat until fully absorbed.
Routine Order:
Toner Serum Moisturizer UVLock Sunscreen

Texture & Finish

Texture: Lightweight, refreshing watery lotion that spreads seamlessly

Finish: Invisible, skin-like, and highly dewy (Leaves no greasy film or chalky residue)

Key Ingredients

Inje Birch Tree Sap, Niacinamide, Hyaluronic Acid, Adenosine

What it is & why it works  

What it is: A revolutionary, daily chemical sunscreen that provides high-level broad-spectrum UV defense while simultaneously delivering the skincare benefits of a premium hydrating essence.
Why it works: Traditional sunscreens are notorious for feeling thick, leaving a chalky white cast, or drying out the skin by midday. This formula completely changes the game by using a highly moisturizing base of Inje Birch Sap and Hyaluronic Acid. It acts as a two-in-one product, actively blocking harmful UVA and UVB rays while continuously feeding the skin with essential amino acids and minerals. It glides on effortlessly like a watery lotion, absorbs in seconds without any white cast or pilling, and leaves the skin with a flawless, dewy finish that grips foundation beautifully.

Full ingredients  

Purified Water, Dibutyl Adipate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Polymethylsilsesquioxane, Ethylhexyl Triazone, Niacinamide, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Coco-Caprylate/Caprate, Caprylyl Methicone, Diethylhexyl Butamido Triazone, Glycerin, 1,2-Hexanediol, Butylene Glycol, Betula Platyphylla Japonica (Birch) Sap (1,425 ppm), Sodium Hyaluronate, Hyaluronic Acid, Glyceryl Glucoside, Dipotassium Glycyrrhizate, Allantoin, Portulaca Oleracea Extract, Artemisia Annua Extract, Pinus Sylvestris Leaf Oil, Chamomilla Recutita (Matricaria) Flower Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Ascorbic Acid, Adenosine, Pentylene Glycol, Behenyl Alcohol, Poly(C10-30) Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Decyl Glucoside, Tromethamine, Xanthan Gum, t-Butyl Alcohol, Tocopherol, Carbomer

Skip to product information
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Three women with different skin tones and expressions, promoting skincare products for sensitive and acne-prone skin.
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Three women with different skin tones and expressions, promoting skincare products for sensitive and acne-prone skin.
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Round LAB

Round LAB Birch Moisturizing Sunscreen UVLock SPF 45+

CHF 18.99
Duties and taxes included. Shipping calculated at checkout.
Volume : 50 ml
Quantity

  • Dispatched in 24h

  • 14-Day return policy

  • Free Samples
Social :

Protect and hydrate your skin with Round Lab Birch Moisturizing Sunscreen UVLock SPF 45+. A vegan, invisible daily sunblock that doubles as a moisturizer.

Bundles

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The same product, with the steps that go around it.

Trust & Transparency

Is this product cruelty-free?  

Animal testing for cosmetics has been banned in the EU since 2013 and in Korea since 2017, and every product we stock is sold in line with European cosmetics law. Where a brand also holds an independent certification such as Leaping Bunny or PETA, you will find the logo on the pack.

Cruelty-free is not the same as vegan. For formulas without animal-derived ingredients, look for our Vegan tag.

What are the KKUMIDA SIX?  

Six tags that show at a glance what a formula leaves out and how it was checked: Alcohol-Free, Fragrance-Free, Pregnancy-Friendly*, Clean Ingredients, Vegan, Dermatologically-Tested. You will see them on product pages, and you can filter any collection by them.

*Always patch test first. If you are pregnant or breastfeeding, check with your doctor before adding anything new.
What each tag means →

Is everything 100% authentic?  

Yes. We buy only from the brands themselves or their authorised distributors, never from resellers or marketplaces. Every product arrives sealed with its original Korean batch code and ships from our own warehouse in Switzerland or Austria. If anything looks or feels different from what you know, email us a photo and we will make it right.

Where does this fit in my routine?  

For skincare, layer from the thinnest texture to the thickest.

Morning
Cleanser → Toner → Serum or ampoule → Eye cream → Moisturiser → SPF, every day, winter included

Evening
Oil cleanser → Water cleanser → Toner → Mask or device, 2 to 3 times a week → Serum or ampoule → Eye cream → Moisturiser

Use strong acids (AHA, BHA, PHA, peels) and retinoids on different nights, and add one new active at a time. For hair, body and makeup, follow the directions on the pack.

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The KKUMIDA Promise

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FSC® certified eco packaging

We use FSC-certified boxes and recycled materials and minimize plastic so your order is kinder to the planet.

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100% cruelty free selection

KKUMIDA only carries brands that do not test on animals. Every product is cruelty free.

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Guaranteed authentic

Sourced through official brand channels and authorized distributors.

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Dispatched in 24h

Order on a working day and your parcel leaves within 24 hours.