Shonan Beauty Eyelash Serum Premium 4mL 1 piece 3,740 yen (tax included) Formulated with 20 kinds of eyelash serum ingredients, including hair root stem cell culture solution. This rich eyelash serum is okay to use once a night. Oil-free, so it can be used by those with eyelash extensions or perms. The tip of the brush has a special soft chip shape. Delivers the serum thoroughly to the eyelashes. Can also be used on eyebrows.