Which of the following is considered a prohibited substance in a salon?

MMA formalin tablets are considered a prohibited substance in salons due to the health risks associated with their use. MMA, which stands for methyl methacrylate, is a substance that has been banned by the FDA for use in nail products because it can cause severe allergic reactions and damage to the natural nail. Additionally, MMA can create difficult situations for nail technicians and clients alike, as it is known to cause adhesion issues and is illegally used in beauty treatments despite its known toxicity and hazards.

In contrast, organic nail polish removers, non-toxic acrylic products, and herbal oils are generally regarded as safe when used properly and are not prohibited in salon settings. These alternatives often cater to a clientele that is concerned about the safety and health impacts of chemical exposure, thereby aligning with current beauty industry trends favoring safer, more natural products.