Skin Aqua is a popular Japanese sunscreen brand by Rohto, known for its lightweight, hydrating formulas (like the UV Super Moisture Gel) that offer high SPF 50+ PA+ protection, often featuring hyaluronic acid for moisture, no white cast, and water resistance, suitable for face/body, easily removed with soap or oil cleanser. They combine strong UV defense with skincare benefits, making them popular for daily use and layering under makeup, but can be removed easily, and some users might experience mild irritation.