Not sure. I use mine up pretty quickly. Have had some bottles over a year and their still good
We have used their products for over 20 years.Very Satisfied.
If you are asking about the fragrances being in a bottle, I have had and may still have a few that are like 2yrs old and they are still strong and yes I am still using them in my candles. Keep them stored in a dark place will also help. Their bottles are dark brown so thats a plus. They may fragrances that I randomly get a request for. If you are asking about the fragrance in your candle, that will be determined on how much you put in them and how strong the fragrance itself is. I love their fragrances!
Thanks! Your answer is awaiting moderation.