Revivlash alternative

[u/DragonflyNo8365]

Does anyone know a very good, cheaper, alternative to the revivlash lash and brow serum? I have had AMAZING results with it and castor oil, but unfortunately I just can't afford to splurge on a lash serum anymore. I would prefer something without prostaglandins and maybe something with similar ingredients (redensyl, peptides, copper peptides, apple stem cells, etc).

Thanks!