Our set of sensitive liquids was carefully developed and tested to allow users to continue to create beautiful and long lasting manicures without having to experiencing "dip flu" symptoms. "Dip Flu” is a reaction to the contents of Step 1 and Step 3 in a Dip Powder Liquid System set. All Dip Systems currently on the market use the same chemistry for their steps. The reaction typically includes sneezing, coughing, having congestion, or headaches during or after dipping your nails.