If I don't have a FB account, can I still use COSMERIA? Cosmeria Support June 28, 2017 04:51 Updated Follow Unfortunately no. You need your FB account to log onto COSMERIA website. Related articles How can I delete my COSMERIA account? I really like your samples, can I purchase the full-size product from COSMERIA? Why is my comment deleted? Comments 0 comments Please sign in to leave a comment.