I used My favorite watermelon Lip Smacker and OCC's lip tar in Divine.
Now when I did this I didn't measure anything out. I just started with a lip balm that was about 1/8 of the way gone. I emptied it into a silicone baking cup melted it down and eyed the amount of OCC lip tar. Mixed it up and poured it back in. It was a supper easy proses and took no more than 15 minuets to do.
There is also a video on how to make them into lipstick but that was just too much special equipment for me.