What was a significant issue with the early application of semipermanent eyelash extensions?

The significant issue with the early application of semipermanent eyelash extensions was primarily the use of industrial-grade adhesive. This type of adhesive was not specifically formulated for use on delicate areas such as the skin surrounding the eyes, which can lead to a range of complications including irritation, allergic reactions, and damage to natural lashes. The chemical composition of industrial-grade adhesives often includes harsher solvents and substances that can be detrimental to sensitive skin and eye health.

Utilizing adhesives not suited for cosmetic use lacked the safety standards necessary for skin application and could result in severe adverse effects for clients. This history has led to increased regulation and the development of specifically formulated eyelash extension adhesives that are both safe and effective for use in the beauty industry.

Additionally, while factors like the lack of proper training and inadequate customer support have played roles in the overall safety and satisfaction regarding eyelash extension services, they do not directly relate to the integrity and effects of the adhesive itself as prominently as the issue of using industrial-grade adhesive.