No right answer. If someone wear only 1 perfume for all the year he will need 100 or 200ml for sure.
But to be less objective.
I use 50 ml and 30ml.
50ml for daily
30ml for occasions
and the only 100ml I have is Ombre Nomade because 50ml does not exist. But worth it ! 
Finally I'd like to say, if I could only use 1 size it'll be 50ml (not too much not too less)
I tend to go for 50 or 100 ml bottles. Most of my bottles hardly have a dent in them after spending years in my collection, but I feel reassured having a large bottle of a fragrance I really adore that it will last me a lifetime. If the bottles are 50 or 30ml I tend to buy backups if I really love them. I have some serious fomo going on. Afraid of running out and then missing out on discontinued or reformulated fragrances. 😵💫
For me personally, I always purchase 15 or 30 ml bottles maximum. I have never in my entire life used up a bottle, not even a 30 ml one.
I tend to go for 50 or 100 ml bottles. Most of my bottles hardly have a dent in them after spending years in my collection, but I feel reassured having a large bottle of a fragrance I really adore that it will last me a lifetime. If the bottles are 50 or 30ml I tend to buy backups if I really love them. I have some serious fomo going on. Afraid of running out and then missing out on discontinued or reformulated fragrances. 😵💫
I absolutely understand that FOMO I'm exactly the same lmao !
I tend to go for 50 or 100 ml bottles. Most of my bottles hardly have a dent in them after spending years in my collection, but I feel reassured having a large bottle of a fragrance I really adore that it will last me a lifetime. If the bottles are 50 or 30ml I tend to buy backups if I really love them. I have some serious fomo going on. Afraid of running out and then missing out on discontinued or reformulated fragrances. 😵💫
I absolutely understand that FOMO I'm exactly the same lmao !
Always great to meet somebody that understands me 🤗
The smaller the better. Unfortunately, most of my favourite frags can be only bought in 100ml bottle. And they are not popular, so almost no chance to buy a decant or a sample.
I'd rather get many small bottles with different flavours than buying 1-2 big bottles after a very tough choice, instantly regretting that I didn't buy other beautiful frags yet together with those more preferred ones 😅
curiosity itch: sample spray
Like it: 30-50ml
Love it: 50ml plus travel size
Faves & Vintages: FB plus 30ml backup
