I made candles for a few months before I gave them to some co-workers for testing (with a test score sheet!) I did sell some that Christmas, about 4-5 months after I started to create. Looking back that wasn't long enough. I'm confident that I didn't sell anything unsafe but I'm sure they didn't burn as well as they should have. Luckily for me, life got in the way for the first 6 months of this year (did a lot of re-evaluating in my life and relationships) and the candlemaking took a backseat until early fall. At that point I starting creating and testing again so that what I sold this Christmas was head above heels better. I'm finally at the point where I feel comfortable knowing what to test, so I think that it'll be a few weeks testing for each new candle -- combo of wax (which is now stable, thank goodness!), FO, wick and dye that I bring on board.