I've noticed (and have to admit) that I sometimes write a review too soon after testing or buying a perfume...I sometimes have to come back on it and change or delete my initial review. So I've learned not to write one too soon and now I'm curious about how long you wait before you judge a scent.
Love, Ringtale
I am faster when I don't like a scent.
I try to get 4 or 5 full wears before rating and posting a statement and usually try for at least 10+ full wears before posting a review; with some exceptions.
I think this is probably a bit early for both but I enjoy writing/talking about all fragrance the most when it's new to me and as I'm still experiencing everything it has to offer.
Perfumes are all about leaving a 'first impression', so I think it is perfectly fine to put those in writing. I don't see why you should wait until your nose has fully adapted to the fragrance and all those surprises of the first wear are long lost.
Also I think there is not one review that grasps the fragrance in all its aspects as every opinion is completely subjective. It is the variety of impressions and experiences of different people that provides the most insight.
So please just jot down whatever impression the perfume gives you and never delete a review again 
If it's a sample, I give my first impressions in a review. But if it's a full bottle or travel size bought, I usually wait until I feel that I've understood the fragrance on skin, paper and clothing.
It's hard to say when the right time is- certain fragrances express differently in heat vs. cold.
You can always update your review later down the line with more mature thoughts.
Thanks everyone for your replies!! And it's true that one can update his or her review, had to do that a few times already, but I'm always afraid people may find that annoying🤔.
Depends on the fragrance. I'll take a few full wearings before reviewing a particularly complex fragrance. And there are some simple/generic fragrances where I write a statement within 5 minutes of applying because I know where the fragrance is going, and there aren't really going to be any surprises.
I don't think you should delete your review, an edit/update is more useful for you and the readers.
I write reviews in case I feel like I've got something meaningful to say, and the others haven't described exactly how I feel (in better words). For some perfumes that I love/hate, one sampling is enough. How many hours? I don't check the time, but I think after 3 hours minimum. This would be for scents that fade away after an hour or two. If for no other reason, I wait for at least half a day so that I can fairly rate their longevity and sillage. For some, I test them a few times because I'm not really sure how I feel about them after a single wear.
Mostly I write after multiple wearings and I wait until I understand the perfume totally. That is how the perfume really performs on my skin. I don't concentrate at all how they smell on a test strip, I don't use those at home at all and I have noticed that you can't tell so much about the scent on the paper (or you can but it's not how the scent really is). But it would be useful to tell as well how the perfume was smelling first since in most of the cases first impression is very different than after wearing the scent like 5-10 times or more. Some people are judging the perfumes too quickly and it would be useful to tell how the experience will possibly change. Statements I may write after a couple of wearings or even only one if I don't like the scent so much. Anyway whenever is the review written it's important to tell if the review is based on a random testing, a sample or multiple full wearings. Now after updating my scents and reviews to this site I start to edit my reviews and add more analysis there with some comparing as well.
Honestly?
Forever.
I can have first impressions quickly when discovering a scent, of course, but most of the time, I know that they will evolve and get more precise after several wears.
And to actually publish a review, I usually feel the need to really be familiar with the perfume to be able to say something pertinent / useful, and not shortchange it, so to speak. In a nutshell, pretty much the opposite of @Kurai, 
Now, that's me, and people will vibe with certain styles and not others - some are bored with long reviews, others like details.
Personally, I do see little point in three-word-tops jots like "Eww, old lady!", "Mothballs." or "Total scrubber!" as they actually say pretty much nothing about the scent.
On the other hand, I find that a first impression statement like "Artificial, generic fruit notes, smells more like a shampoo than a perfume" is useful to have a solid, general idea of what the scent is like. So, I couldn't do that, but I still find that first impressions, when they're clear and strong, certainly have their place and their usefulness.
Most importantly, again: each their own! I'd tend to think that reviews are meant to help the reader, but they can also very much be about your own pleasure to write about something you (dis)like, too - so everyone, knock yourselves out! It's bound to resonate with someone anyway you look at it.
It depends. Some perfumes are so mediocre, they only deserve a statement, not a review. If something captures my attention, then I try it several times in different conditions/seasons, before I can truly sit down and review.
I post statements quite quickly. I have no problem changing them later.
A review I have yet to post but I’ll have to be really familiar with the fragrance and once I’ve posted it I won’t look back.
I usually try fragrances 3 times on my skin, and often another time on a paper blotter while writing the review. I always take notes on my phone while I sample, so I don't forgot how I felt about the scent at first and can see if my opinion changed. I feel like I have a pretty thorough impression that way.
In the end everything we ever write is just a snapshot of a moment in time, so I don't think we can only write about fragrances we knew for years (that way, there would barely be any negative or neutral reviews, because no one wears a fragrance they don't like that often).
But I do prefer detailled reviews over short statements. The latter are good to get a quick idea of a fragrance, but I always feel like something is missing when I try to write something that short, so I go for full reviews myself.
I love samples so I'll leave a review after wearing a few times in different weather and such, I personally let the fragrance sit and go from there too as sometimes it improves with time (Like with Alien) but I think first impression reviews are great as you get an idea of what it might be for passers by haha
It depends on the fragrance. There are a few that once I have tried them I know right away what I think one way or another they either repulse me right away or I jive with them so much that it just makes sense and easy to describe. Usually though, I need a few days of wearing to get my thoughts regarding a fragrance so I do it justice. Oh, and I never post anything on a fragrance I have just smelled on blotter, I feel that does not do a service to the perfume or anyone who takes the time to read the review.
The majority of my reviews are based on wearing the fragrance for one day (or night). Every once in a rare while, I'll come across a fragrance that I can't decide on after one wearing. I will then put the sample aside and revisit it after a week to several months.
All my reviews are based on wearing the liquid on my skin only, not spraying clothes. In only one case did I write a review based only on a test strip and I regret it. I plan to re-review that fragrance with an actual wearing some time in the future.
I try to keep my reviews until after 3 wearing's (on skin) weather I hate it or Love it so I can formulate a genuine opinion (Even if I know what that opinion is off first wearing). So far I have never left a review on something I haven't personally wore. Now I don't always follow this rule of thumb so if I do ever pull the trigger early and drop a review I do try to note in the review that ill update if any changes occur weather good or bad.
