Is primarily used for the “French fill”, i.e. to re-enhance the extended edge of the “French Manicure”. The objective is to recreate an appealing smile line and a balanced extended edge. Ultra White must be “sandwiched” between two layers of resin (e.g. Modeling Resin or One Component) and should not be applied on the natural nail unless a thin layer of One Component has been applied first (risk of lifting). Ultra White Fill is not suited for building a free edge.