Melt the shea butter, argan, or jojoba oil and emulsifying wax in a double boiler, stirring occasionally.
Remove from heat and add the aloe, witch hazel, and Leucidal if using, whisking vigorously until smooth.
Let cool completely. The fridge speeds up the process.
Tinting Your Face Lotion
Mix the lotion (either homemade OR store bought) and the colors to get the desired shade. Start with a tiny amount of each color powder and slowly work up to get your desired shade. You'll want to use either cocoa powder and mica OR mineral makeup, not both. I started with ¼ tsp each of cocoa powder and mica, then added 1/8 tsp more at a time until it matched my skin tone.
This will look darker in the jar than it does on skin. To get your perfect shade add a little more color at a time and test the color on your inner arm.
Store in an air-tight container and use daily as desired for a smoothing/polishing, natural tinted lotion.
Notes
If using pre-made lotion, this will have the shelf life of the lotion you are using. If you're using aloe vera without a preservative (the one linked to above is preserved), then this should be stored in the fridge and used within 10 days. If you want to add a natural, broad-spectrum preservative it will extend the shelf life to about 6 months. Be sure to keep in a cool, dry place, away from excess heat and moisture for best results.