I was just wondering if there are any guidelines as to how long an open bottle of EDT will last before it either goes off or there is any noticeable change in scent? I am referring to a bottle that is kept in a cool dark place.
The reason I ask is that I find a single 100ml bottle lasts me quite a while (say 12 months) - so before I start to collect multiple EDTs I thought I'd ensure that each will have adequate shelf life to last a good long time.
The scent will last as long as you keep it like you have. I've had bottles for years. Just take care of them. I've known people to have bottles that lasted for decades.
I have had mine for a few years and they are all fine. I have so many bottles too. It sounds like you are keeping them in good condition so you should have to worry about anything.
EnvYuS My Wardrobe