No. Grey happens when you put a skin-coloured product over blue veins. This one is peach on purpose. Peach and blue cancel each other out.

Use less than you think. It sets into a flexible film, not a crust. One small dot per eye, tapped in with your ring finger. A reviewer put it best: "less is more even though I want more."

It shouldn't. It uses mineral filters - zinc and titanium - which sit on top of the skin. They don't run and they don't burn like chemical sunscreens do.

Most people take Medium. Go Fair if you burn easily and never tan. Go Tan if you tan easily or have golden or olive undertones. If it's wrong, we swap it free.

Pinch the skin under one eye. If the colour stays, it's pigment. Stretch it flat. If the colour disappears, it's a shadow from a hollow. This one handles both - it cancels colour and it fills shadow with light.

Yes. Most people here are trying to wear less makeup, not more. One reviewer: "I don't feel the need to wear concealer."

Yes. Put it on last in your skincare, first in your makeup. Let it sit thirty seconds before anything goes on top.

About two months at one dot per eye per day. That's why the subscription ships every 60 days, not every 30.

Send it back within 60 days, even if it's half used. You get your money back.