In order to make your own Tinted Moisturizer, you will need the following: lotion and foundation.
In advance, you will need to select an appropriate foundation and moisturizer. The foundation that you choose should be very close to your current complexion. Mixing it with lotions will dilute it a bit, but it will still need to be close to your current complexion to blend in well.
This is an opportunity for you to increase or add to the current SPF level of your foundation. Choosing a good moisturizing lotion with a high SPF will help you to do that.
To begin, squeeze a bit of moisturizing lotion into the palm of your hand and add a bit of liquid foundation. Mix it well. You can also use mineral foundations in this way.