Back in January I solved my foundation dilemma by mixing Cargo Lightweight with L'Oreal True Match. Since then I have noticed that the formula needed adjusting because it was still too dark and I kept getting pastier with the lack of sun during the last stretch of winter. But with the weather warming up, it's probably a good idea to "lighten up" on the foundation and opt for a tinted moisturizer instead.
I am nearly finished with my trusty Cetaphil Daily Moisturizer but cannot use it anymore due to the warm weather. My oily skin finds it too heavy during this time of the year and I've been using the remainder of my Aveda Outer Peace Acne Relief Lotion lately. So I turn into a faux-chemist again and decided to add the Cetaphil to my custom-mixed foundation.
The bottle of foundation is only half-full (looks full because I shook up the mixture) and I added about a dozen pumps of the moisturizer into the foundation. At that point it's still more foundation than a tinted moisturizer, which is good for me because I need the coverage, but it did lighten the foundation colour so that I could use it again. I'm thinking of adding more lotion to the foundation to make it a truer tinted moisturizer, hoping to get away with using that minus an actual moisturizer on hot and humid mornings.
Personally I really like Cetaphil and L'Oreal True Match, and combined, they yield great result. Do you mix your own tinted moisturizer? If so, what is the best combination that you've come up with?