We're sorry the concealer isn't working for you. Do remember its a treatment concealer so its treating your skin as well as concealing it. 

Many people find that with continued use, the concealer starts to reduce underlying redness and evens out skin tone and so achieves a much better tone match once the skin in less red or uneven. 

Another tip is also adding a little of your normal concealer over the top until your skin starts to calm down.

However if you're really unhappy with it you can send it back and get a refund.

We hope this answer has helped