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나가기 전에 미리 발라야 효과가 있고 자주 덧발라 주는게 중요하다고 하더라구요
It is advisable to make applying sunscreen a habit during the summer, and it is recommended to apply it even on cloudy days. Apply it evenly and thoroughly to the face and exposed areas 20 to 30 minutes before going outside, and reapply frequently after sun exposure; to maintain protection, reapply every two hours when sweating or swimming.