Which of the following is a prohibited product in esthetics?

Methyl Methacrylate Liquid Monomers are prohibited in esthetics because they can pose serious health risks to both clients and practitioners. These substances are known to cause skin irritation, allergic reactions, and respiratory issues. Furthermore, the use of such products can lead to severe legal and regulatory consequences for esthetic professionals, as they are not recognized as safe for use in cosmetology practices. Regulations emphasize the importance of using products that are safe and suitable for cosmetic applications, and methyl methacrylate is specifically banned due to its hazardous effects. This makes it critical for estheticians to avoid these products to ensure the safety and wellbeing of their clients and comply with established health standards.