Usage: First, 15-20 minutes before going out, apply sunscreen evenly to the face or body parts that need it, massage until fully absorbed, and then naturally form a thin film. If makeup is needed, please use it before applying makeup. If exposed to sunlight for a long time, it is necessary to reapply every 2-3 hours to moisturize and fully replenish the skin, protecting it from UV rays and refreshing it.