Eyelash Extensions Written Practice Exam

What should adhesives be packed to prevent from forming inside the bottle prior to opening?

1. Moisture

2. Dust particles

3. Formaldehyde

4. Oxygen

The correct answer is: Formaldehyde

The correct choice relates to a key factor in the preservation and performance of eyelash extension adhesives. These adhesives are typically polymer-based and have specific chemical compositions that can be affected adversely by exposure to certain elements. Formaldehyde, specifically, is a compound that can potentially react with the components of the adhesive, leading to undesirable changes in its chemical properties. Proper packaging helps to mitigate this risk by ensuring that the adhesive remains stable until it is ready for use. Moisture and oxygen are also critical factors that can alter the viscosity and effectiveness of the adhesive, but in this context, the specific reference to preventing the formation of formaldehyde suggests a focus on maintaining a pure and effective adhesive formula. Dust particles can be a concern for contamination, but they do not specifically lead to the chemical alteration or degradation of the adhesive in the same way that formaldehyde would. Thus, ensuring that formaldehyde is not able to form and affect the adhesive is paramount for maintaining the integrity of the product before opening.