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Round Lab

Round Lab Birch Juice Moisturizing Sun Spray

Ingredient analysis and how the ad lines read

Read on 2026-09-22

What is this product?

A spray-format sunscreen built on five modern UV filters with Betula Platyphylla Japonica Juice, xylitol and menthol for a light, cooling, hydrating finish. Best suited to people who want easy reapplication over makeup or on body areas, but avoid it if denatured alcohol or menthol irritate your skin.

What makes it different?

The filter lineup is unusually thorough for a spray, combining Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Terephthalylidene Dicamphor Sulfonic Acid, Phenylbenzimidazole Sulfonic Acid and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine. Betula Platyphylla Japonica Juice sits at item 13 and humectants like xylitol and erythritol follow, giving a hydrating angle rather than a purely protective one. Menthol at item 26 delivers a cooling sensation that some will enjoy and sensitive skin may not. The list contains no fragrance ingredient and no essential oils, though Alcohol Denat. ranks second.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know 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, except 4 with no dictionary entry, left in Korean.

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.