O.S.S.O Gel is abbreviation of One-Step Soak-Off, which is one of our distinguish features of our gel among other soak off gels in the market. It is a soak-off gel that requires only a one-step application, eliminates the use of primer, base and top coats. Inherent a good adhesion and little filing is required, no damage to natural nails will incur using O.S.S.O Gel. High durability as long as 2 weeks. Immediate mirror-like finish with long lasting shine. It is a safe and easy-to-use gel polish for everyone! Blossom Cosmetics Limited is a company registered in Hong Kong. We specialized in manufacturing gel nails, soak off gels, one-step soak-off gels, LED/UV lamps, nail salon chemicals, and other nail salon equipment.