How to use Caro white ??

Hello y’all so I bought a Caro white bottle off of the Walmart website.. I’ve been using it for about two weeks off and on . I don’t see a difference on my body. I do see my face getting a little lighter but that’s it. I’m like Gabriel unions color. Am I using it correctly? I don’t mix it with anything and I use it once a day after showering…
Am I supposed to use it everyday to see results?
How much do I use ?