But as with any new beauty service,quickly revealed their drawbacks. The material varies from studio to studio, but lash extensions can be made of synthetic, mink, faux , or silk fibers. Most studios offer a variety of extension lengths, curl patterns, and tints so clients can customize their look.ome studios also carry " " extensions, which are technically just synthetic extensions that mimic mink extensions. So if you're vegan or allergic to cats, be sure to specifically request that mink s are not used on you. No lash extension type lasts longer than the other, but mink and silk tend to have a more natural look, while synthetic lashes can be thicker and darker, which is better suited for those who want a bolder look.Within these three categories (mink, silk, and ), there are varying degrees of length and curl to choose from. Application: Using tweezers, your lash artist will dip the end of each extension in the lash glue and then apply it to your individual . Even if you see the best lash artist and execute your aftercare perfectly, it’s still very possible that you’ll see damage to your natural .