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Old methods of applying eyelash extensions used ____ grade adhesives.

  1. Medical

  2. Industrial

  3. Household

  4. Aerosol

The correct answer is: Industrial

The correct answer, which refers to the use of industrial grade adhesives in older methods of applying eyelash extensions, is grounded in the specific formulations and intended uses of these adhesives. Industrial grade adhesives are designed for heavy-duty applications and often contain compounds that can be more aggressive or irritating when used in cosmetic procedures. In contrast, medical grade adhesives are formulated for safe use in clinical settings and are intended to minimize irritation and provide better skin compatibility, which is crucial in a beauty application like eyelash extensions. Household adhesives are not suitable for this type of application as they are designed for general bonding tasks and lack the specific properties needed for cosmetic use. Aerosol adhesives, while convenient for some applications, do not provide the precision and control required for eyelash extension application. The move away from industrial grade adhesives to more specialized medical grade formulations reflects an ongoing commitment to safety and comfort in the beauty industry, highlighting the importance of using products that are appropriate for contact with the sensitive skin around the eyes.