Review of OPI Nail Envy by spaflam
I have mixed results with Nail Envy - and in the early stages saw Incredible results and stronger nails that peeled less - but - with over-use the nails can get very hard and brittle. (Then the free edge just snaps off).
Use in moderation and alternate with HYDRATING base coats (Amera makes one, and CND Sticky is also good.)
Not cheap - but not a deal-breaker either.