It can sometimes be nice to rub your eyes well. Is it harmless or a bad habit?
Rubbing your eyes hard is a habit that you better break. The skin around your eyes is very fragile. By rubbing you pull on your skin, as it were, and that can cause wrinkles.
And if you rub very roughly, it's not good for your cornea. Try to be a little careful with your eyes and the sensitive skin around them.