ROUND LAB Birch Juice Moisturizing UV LOCK SPF 45 Sunscreen 1.69 fl oz — Lightweight Hydrating Fragrance-Free

ROUND LAB Birch Juice Moisturizing UV LOCK SPF 45 is a lightweight, lotion-like daily sunscreen that hydrates sensitive skin without leaving a white cast or heavy residue.

Designed by the Korean brand ROUND LAB, this 1.69 fl oz UV Lock sunscreen blends a hydrating birch-derived base with broad-spectrum SPF 45 protection for everyday wear. Its non-greasy essence texture applies smoothly under makeup, has a neutral finish, and is formulated to be gentle on acne-prone and reactive skin. OTC-registered for use in the US, the formula aims to retain the original Birch Juice Moisturizing line’s soothing properties while meeting regulatory sun-protection standards.

What makes this sunscreen gentle enough for sensitive or acne-prone skin?

The formula avoids common irritants and has completed low-irritation testing, backed by German Dermatest certification. It’s free from 19 harmful ingredients and uses soothing birch-derived hydration to support the skin barrier.

• Fragrance-free, minimizing scent-related irritation
• Low-irritation tested and Dermatest-certified
• Non-comedogenic, suited for acne-prone skin
• Contains birch-derived moisturizers to help comfort reactive skin

How does the texture perform under makeup and throughout the day?

The lightweight, lotion-like essence spreads evenly and dries to a natural, non-powdery finish, making it a solid base for foundation or tinted products. It doesn’t pill or cake when layered, and keeps skin feeling hydrated without greasy buildup.

• Silky, non-greasy texture that blends quickly
• No white cast — suitable under light and medium coverage makeup
• Absorbs without leaving residue or clogging pores
• Maintains comfortable hydration for daily wear

Is this product a reliable sun protector for daily and outdoor use?

Yes — the product is formulated to provide broad-spectrum SPF 45 protection and is OTC-registered for the US market. It’s intended for everyday UV defense, though reapplication is recommended after heavy sweating, swimming, or prolonged sun exposure.

• Broad-spectrum SPF 45 for UVA and UVB defense
• OTC-registered formula meeting US sunscreen standards
• Light enough for repeated daytime reapplication
• Washable with regular cleanser at day’s end

How should I apply it for best results and compatibility with my routine?

Apply as the final step of your skincare routine, after serums and moisturizers. Pat a generous, even layer across face and neck, and allow it to set for a few seconds before makeup; reapply every two hours when exposed to direct sunlight.

• Use as the last step before makeup
• Apply to face and neck; pat gently for even coverage
• Safe for the delicate eye area — non-stinging
• Reapply after swimming, sweating, or towel-drying

Who is this for: ROUND LAB Birch Juice Moisturizing UV LOCK SPF 45 is aimed at anyone wanting a hydrating, unobtrusive daily sunscreen—especially people with sensitive, redness-prone, or acne-prone skin who need reliable SPF protection without fragrance, white cast, or heavy feel. It’s well suited to those who wear makeup and want a smooth, natural finish, and to users looking for a Korean-formulated sunscreen adapted for the US OTC market.

Ingredients

Active Ingredient : Avobenzone 2.7%, Homosalate 13.5%, Octisalate 4.5% Inactive Ingredients : Water, Butyloctyl Salicylate, Propanediol, Acrylates Copolymer, Butylene Glycol, Caprylyl Methicone, Polyglyceryl-3 Distearate, Benzotriazolyl Dodecyl P-Cresol, Niacinamide, Diethylhexyl 2,6-Naphthalate, Polymethylsilsesquioxane, Glycerin, Calcium Aluminum Borosilicate, 1,2-Hexanediol, Poly C10-30 Alkyl Acrylate, Pentylene Glycol, Cetearyl Alcohol, Tromethamine, Methylpropanediol, Glyceryl Stearate Citrate, Betula Platyphylla Japonica Juice, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Ethylhexylglycerin, Artemisia Annua Extract, Anthemis Nobilis Flower Oil, Sodium Stearoyl Glutamate, Glyceryl Polymethacrylate, Triethoxycaprylylsilane, Pinus Sylvestris Leaf Oil, Sparassis Crispa Extract, Polyether-1, Allantoin, Dipropylene Glycol, Glyceryl Glucoside, Biosaccharide Gum-1, Tocopherol, Portulaca Oleracea Extract, Sodium Hyaluronate, Hyaluronic Acid, Ascorbic Acid