Leonard User The quality of materials is the basis for the successful work of a craftsman. When choosing eyelash extension products, several key factors are important to me. First of all, it is the safety and hypoallergenicity of materials, because the health and comfort of the client always comes first. I also pay attention to the natural appearance and durability of the result - after all, eyelashes should look natural and please the client for as long as possible. Reliability and reputation of the manufacturer also play an important role when choosing products.