Uriage Hyseac SOS Drying Gel 15 ML: SOS Paste acts right from the first night by accelerating the spot maturation process, causing it to disappear quickly. Key Components Salicylic Acid Beeswax Sodium Shale Oil Sulfonate Indication Soothes locally Acts on spots How to use Apply at night on localised pimples. Leave it all night. Rinse the next day and observe the result. If necessary, repeat the application the following night.