I've NEVER EVER finished a bottle, and I don't have so many, It's just I don't wear wear perfume on a daily basis, I reach for it when I'm on the mood, and it's a shame I had to throw away a half-full 50 ml. bottle of Noa (by Cacharel) perfume because It began to smell rancid after 2 years or so... from this moment on, I only purchase the smaller flanker available and I have to be very sure that I'm not going to get bored of the smell after using it a few times, which is what usually happens to me.