I recently purchased this product off sephora after I heard so many youtubers raving about it. Although this bottle is small, the product inside is super pigmented. I got the shade G20, as in Winter my skin fades from bronze goddess, to jaundiced. So all my favourite foundations need a little lightening love.
The product comes in a tiny bottle with a dropper dispenser, which makes using the product all that easier. This product blends nicely into the foundation without changing the texture or finish of the product. It makes customising your foundation so much easier, just a few drops and your foundation goes from just cake to icing on top of cake as well (which I love). So if you're into a light coverage product whack some of this into some moisturiser and you'll be good to go.
The fact that there are so many different undertones in the shade range and a little goes a long way, this product is definitely a keeper. My only worry is that with so many shades being suited for every skin tone in the middle, super pale or dark girls might miss out. Cover FX may widen the shade range with time, but if you find one that will suit you snap that little bottle of goodness right up.
I purchased this to add to a moisturiser to provide a light coverage to my daily look rather than bothering with makeup on my days off but I honestly used it probably twice then forgot or just couldn't be bothered as I have a few BB and CC creams just found it relatively useless.
It does give a nice hue of colour that if you get the correct shade matches your natural skin tone and gives you a moistured tint the same as any BB, CC or tinted moisturiser does so for the price, hard to find in NZ aspect I wouldn't bother with these custom drops to be honest.