3 Step 3S173 Crystalac 8 ml is a vast range of colors, they are part of the category of semi-permanent Soak Off Crystalac. It can be spread on a natural nail, using the base (3Step Crystalac) and the top (3Step Crystalac) but they have an excellent yield even on gel. The great advantage of this product is that it is soluble, so it can be removed by making a compress with Foil Remover and Easy Remover. The 3Step colors are very creamy and opaque even with a single application.