I just tried every foundation/tinted moisturiser I own on my arm, plus a few samples. It's a mix of neutrals, warm and cool shades I think. All light/medium.
I still didn't know which was best for me after doing that, then I smeared them all together in frustration. I love the colour I got 😄
Semi seriously, I'm considering squirting the whole lot into a vat and using that for the next 5 years?
How do you know what to use? Its hard for me to judge on my face. I have to apply a face full to check the colur, then wear all day. Sometimes o take a photo. Then I forget the nuances by the next day and have the puzzle again.