Round Lab Birch Sun Stick

Hydrating sun protection made effortless

ROUND LAB Birch Juice Moisturizing Sun Stick SPF50+ PA++++ 19g is a convenient Korean sunscreen stick designed to provide high-level daily UV protection while helping keep the skin hydrated and comfortable.

Powered by Birch Tree Sap, the lightweight balm glides smoothly across the skin and leaves a clear, non-greasy finish without a noticeable white cast. Its portable stick format makes sunscreen reapplication quick and convenient, whether at home or on the go.

The formula also combines Niacinamide, Hyaluronic Acid, soothing botanical extracts and a 12-Peptide Complex, providing additional skincare benefits alongside everyday sun protection.

Key Benefits

• Provides high SPF50+ PA++++ UV protection.

• Helps protect skin against UVA and UVB exposure.

• Convenient stick format for easy application and reapplication.

• Lightweight balm texture that layers comfortably.

• Leaves a clear finish without noticeable white cast.

• Helps maintain skin hydration throughout the day.

• Contains Birch Tree Sap and Hyaluronic Acid.

• Enriched with Niacinamide and 12 types of Peptides.

• Provides a refreshing, cooling feel.

• Portable 19g format ideal for everyday use.

Key Ingredients

Birch Tree Sap

The signature ingredient of ROUND LAB's Birch collection. The formula contains 1,045 ppm of Betula Platyphylla Japonica Juice, providing amino acids, minerals, antioxidants and vitamins that help nourish and hydrate the skin.

Niacinamide

A versatile skincare ingredient that helps support a brighter, more even-looking complexion while complementing the formula's moisturising benefits.

Hyaluronic Acid

Hyaluronic Acid and Sodium Hyaluronate help attract and retain moisture, supporting softer and more hydrated-feeling skin.

12-Peptide Complex

The formula incorporates 12 different peptides to provide additional skin-conditioning care and help support the appearance of skin elasticity.

Aloe Vera & Botanical Extracts

Aloe, Kelp, Purslane and other plant-derived extracts complement the hydrating and soothing properties of the formula.

Suitable For

• Normal skin

• Dry skin

• Dehydrated skin

• Combination skin

• Oily skin

• Sensitive skin

• Daily sun protection

• Customers who prefer lightweight SPF

• Convenient sunscreen reapplication

• On-the-go skincare routines

How to Use

Use as the final step of your morning skincare routine.

Twist the base to raise a small amount of product and glide the stick evenly across areas exposed to the sun, including the face and neck.

Apply generously and evenly to achieve adequate protection.

Reapply regularly throughout the day, particularly after sweating or extended sun exposure. The stick format makes it especially convenient for topping up sunscreen when away from home.

Avoid extending the product excessively, as raising too much of the balm may increase the risk of breakage.

Why Choose ROUND LAB?

ROUND LAB is a South Korean skincare brand recognised for ingredient-focused formulas inspired by different regions and natural environments of Korea.

The Birch Juice Moisturizing collection centres around Birch Tree Sap, with formulas developed to combine hydration and skin comfort with everyday skincare functionality.

The Birch Juice Moisturizing Sun Stick brings these qualities into an especially convenient sunscreen format. Unlike traditional sunscreen creams that can be less practical to reapply when away from home, the solid balm can be applied directly to the skin without dispensing product onto the hands.

Its combination of SPF50+ PA++++ protection, lightweight texture and moisturising ingredients makes it particularly useful as an everyday SPF for customers who value convenient reapplication.

Frequently Asked Questions

What does ROUND LAB Birch Juice Moisturizing Sun Stick do?

It provides high-level daily UV protection while helping maintain skin hydration. Its stick format is specifically convenient for sunscreen reapplication throughout the day.

What is the sun protection rating?

The Korean version is labelled SPF50+ PA++++, providing high UVA and UVB protection.

Does it leave a white cast?

The formula is designed to leave a clear finish rather than a noticeable white cast.

Does it feel greasy?

ROUND LAB describes the product as having a lightweight balm texture with a clear, non-greasy finish, designed to remain comfortable even when layered.

Is it suitable for sensitive skin?

ROUND LAB describes the Sun Stick as formulated with mild ingredients, and the formula contains hydrating and soothing components such as Birch Sap, Aloe, Allantoin and Hyaluronic Acid. Individual sensitivities can still vary.

Can I use it every day?

Yes. It is designed for everyday sun protection and can be incorporated into your morning skincare routine.

Can I use it to reapply sunscreen?

Yes. Easy reapplication is one of the key advantages ROUND LAB highlights for this product.

Does it contain Hyaluronic Acid?

Yes. The formula includes Hyaluronic Acid and Sodium Hyaluronate to provide additional moisture-supporting benefits.

Does it contain Niacinamide?

Yes. Niacinamide is included alongside the moisturising and skin-conditioning ingredients.

How large is the product?

The ROUND LAB Birch Juice Moisturizing Sun Stick contains 19g / 0.67 oz.

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