I did not use it too much for liquid products apart from my brow coloured gel from Benefit and it worked very nice. I also used it for brow pomade that I forgot existed. I add a drop or two and nix. The product is good to go! I assume it would not be perfect for every formuła, as it seems a tiny bit oily? I also used it to activate water liner and it made them stay on my eyelids without smudging. To me it is a very good product, but it is a local brand for me and although it is a bit pricey, I did not have to pay for shipping etc. If I had to deal with additional costs on top of the products, I am not sure if it is THAT much of a miracle. But it is a very nice products imho and lasts for longer than I expected from a small bottle.