Silk Eyelash are the mid-weight type of lash extensions, and are finer and more flexible than the synthetic type which makes their retention slightly better. Because of their light weight, silk lashes are good to use on older clients or clients with weak and flimsy natural lashes. Like synthetic lashes, silk come in a variety of curls and lengths. These types of extensions also hold their curl but the curl tends to be less uniform then synthetic lashes, making them better for clients looking for a more natural look. Silk lashes tend to be thicker than any other type of extensions and also have that rick black color. Silk eyelash extensions tend to be the least comfortable type of extension and are best used for special occasions.