Hybrid Fill 3 weeks only. Request this service for a hybrid fill within three weeks of your last service. If you have less than 50-60 percent of your lashes remaining on your current set, please schedule for a full set. Also, if it has been more than three weeks since your last visit, please schedule for a full set. Either of these two situations will not allow enough time to complete your set if you schedule for a fill. If requesting infill on top of someone else work, there is a $40 extra charge.