A PhD student in Canada has developed a skin cream that allows people to painlessly remove tattoos by targeting the macrophages that have consumed the tattoo ink. The cream, called Bisphosphonate Liposomal Tattoo Removal, uses liposomes to deliver drugs to the ink-containing macrophages, stimulating their natural process of transporting the pigment to lymph nodes and removing it from the skin. This provides a safer alternative to laser removal and limits potential side effects by targeting only the cells containing the ink.