Just because liquid nitrogen is cooler doesn’t mean it’s more effective. Firstly, Freeze Pen uses nitrous oxide because it’s a safer alternative to liquid nitrogen. Both can freeze cells effectively, but the extreme coldness of liquid nitrogen can damage surrounding healthy tissue. Secondly, nitrous oxide allows for more precise treatment, minimizing the risk of pigmentation changes or other unwanted effects. This is especially important for treating delicate areas or smaller lesions like milia, molluscum contagiosum, small warts, and moles.