I have a light skin tone with very neutral olive undertone and the shade O35 is not neutral at all. This is a pretty cool shade and looks pinkish gray on my skin. Otherwise the finish looks pretty natural, but if you have dry skin this might not be for you. I han pretty high expectations as I had heard only good things about this foundation, and I also got very excited for the light neutral olive shade. But, unfortunately it turned out to be disapointing for me.