This dermatologist collective revolutionized mineral sunscreens with their All Day Fine formula, using 20nm zinc oxide particles coated in silica for zero white cast (patent pending). The brand operates a “transparency lab” in Seoul where customers observe product testing.
Koop is a Korean skincare and beauty brand dedicated to clean, effective, and fully transparent skincare. We believe skincare should be simple, science-backed, and free from unnecessary guesswork.
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