This is a unique base - it contains vitamins E, B5 and calcium. The base is used to strengthen weak, thin and exfoliating nails. It Does not give of cracks and chips. Ideal for very elastic, damaged and nibbled nails. It can be used under gel varnish and also under any building gel. It has good adhesion to a natural nail plate and does not give exfoliation in the cuticle area. It dosen’t heat up in the lamp.