We all know how hard it is to find our match in a new foundation, not only when we're buying it at the counter, let alone when we need to order it online. Lots of guesstimations that can end in Ommpa-Loompa disasters!
There is now a website that should help us all with this delicate task : it's call Findation.
Findation is currently in a Beta version, which means that there is still improvement to come in the way they work. Basically the website is based on a algorythm that calculate your match in any foundation from the correct matches you give. You start by giving at least 2 very accurate matches that work 100% for you, then you will be given a list of foundations marked with a percentage of accuracy for you.
In my case, I used Nars Sheer Glow Gobi and Chanel Vitalumiere Aqua in B10 as references. I know now that Shu Uemura Face Architect in Fair Beige 784 would be a 100% match for me, while Revlon Colorstay in Ivory would only be good at 62%. Isn't that impressive?
From what I understand, the more request the website collects, the more accurate the matches are going to be. In the future they also plan on being able to give you your matches based on just one reference you'd provide.
I'm not sure this kind of thing can ever be 100% accurate but I think it's a very good base and a pretty cool tool that will take some of the guessing out of the process of finding our match!