They are the mid-weight type of lash extensions, and are finer coarse and more flexible than the synthetic blend. Because they are softer and more permeable, they tend to hold on slightly longer than the synthetic ones. They can be made to look very natural or very glamorous, at the same time quite dense/thick as the synthetic lashes. As they are lighter in weight, they are often a much better option for your lashes if your own ones are weak or fine. They definitely last longer than synthetic lashes and are made to look more natural amongst the actual lashes. Like synthetic lashes, silk come in a variety of curls and lengths, though are a better option for a more natural look, as the curl is not generally as uniform or as artificial as synthetic lashes. Glamour sets of silk lashes are one of the most popular options for brides, who are looking for lashes that are full and long yet still have a natural appeal.