Do intelligent colour foundations work?

I'm tempted to buy No7 Intelligent Colour Foundation as I usually have trouble finding foundations light enough for my skin tone but I don't understand how a foundation can ';adapt to your skin tone'; so does anyone know if they work or not? Or how they work?Do intelligent colour foundations work?
Yes they do,


i have actually had No7 Intelligent colour before, and it blended really well,


i usually have difficulty finding a foundation that matches my skin tone,


and then when i tried that it was perfect,


I don't use it anymore, i still use a No7 one but not Intelligent colour.





But yeah, ive used it, and it works well,


and i have no idea how it works tbh!!





xo