Silk Oil of Morocco Silk Gel Nail Pen is a one step system. Normal gel polish needs a base coat application and after 2 to 3 layers of gel polish then a top coat is required. With silk you can achieve the same if not better high gloss with just one step (no base or top coat). Normal gel nail polishes cannot be mixed together however the silk gel nail polish systems ingredients enables each of the gel nail polish pen colours be mixed easily. The results are high gloss, long wearing, easy application and of course 1000’s of colour combinations whenever and where ever you like. Available in yellow colour.