Why should technicians avoid using expired products?

Using expired products is significant because they can lead to poor results and potentially adverse reactions in clients. Over time, the ingredients in cosmetic products can degrade, lose their efficacy, or even become harmful due to changes in chemical composition or contamination. This degradation may result in compromised adhesion of the eyelash extensions, leading to them falling off prematurely or not adhering properly.

Moreover, expired products may provoke skin sensitivities or allergic reactions, as the preservatives and other stabilizing agents within them are no longer effective. In the context of eyelash extensions, this can result in discomfort, irritation, or even infection for clients, which severely impacts their overall experience and health. Therefore, ensuring that all products are within their valid usage period is critical for both the safety of the clients and the quality of the service provided.