If you have any major concerns it is always best to book yourself in for a free patch test. However one of the adhesives we use is the only Medical Grade Adhesive on the market and is therefore the safest to use on sensitive people. The adhesive only has a time period of 3 hours to cure, which is a small time frame in which a reaction will occur, if it is going to occur. All the equipment is sterilised thoroughly, before and after every treatment, so no cross contamination can occur either.