Cosmetics Formulation Development

The ingredients I choose Can I mix it and use it as a daily cream? From the list, if mixed, will it reduce the efficiency of which substance or not? Thank you.

Hi, can you mix it together? But mix it in the right ratio, for example is used at the rate of 0.5-5% but according to the proportion that members have informed. It will be used up to 10%, which is not recommended.