Babylon uses the ONLY waxing system in the world to eliminate the chance of cross contamination between clients, PhD. Health experts have warned beauty salons of the capabilities of transmitting hepatitis B, herpes simplex and even HIV etc., from contaminated wax, after testing salons and finding 1 in 4 samples of wax examined, was contaminated. The Unique PhD Applicator has a simple gate mechanism to prevent wax from re-entering the tube. The applicator is NEVER inserted into a wax container and is thrown away after each treatment, unlike spatula and roll-on systems. PhD offers you a professional, hygienic, quick, easy and less painful hair removal service.