What is the difference between a regular 2 week fill and a backfill?
Nail technicians often differentiate the two procedures this way even though opinions may vary. The difference between an infill and a backfill (or rebalance) is that when doing an infill, the product is only applied to the regrowth area, leaving the nail somewhat unbalanced but making the process a much faster. When performing a backfill, the nail is shortened and thinned, and then the product is applied to fill the regrowth area and a bit over the entire nail to create an apex (higher part of the nail) in the properposition. This procedure leaves the nails just as they were after the first application.