We cover infills at the end of the nail course. Yes, obviously we cannot do an exact infill, as your colleague has not had their nails on for 2 weeks. Many courses will get you to come back to do a day or half day just on infills, AND CHARGE YOU ABOUT £100. This is a great idea, as you could then spend all that time practising infills, BUT in reality, most of our students don’t need to come back as due to time and cost, they prefer to cover this on the training day. If a set of extensions is applied well and filed well, then when it comes to infills within 2 weeks, they are easy, as the initial prep and application was done to perfection.