Here is an article from The Every Girl about Melissa Butler, founder of The Lip Bar, which sells fun and crazy colors of lipstick. I find it inspiring, especially the fact that she started out in her kitchen. To quote:

The Lip Bar started in my kitchen, and it took countless nights testing  recipes, adding and subtracting ingredients. I experimented for a full  year before deciding on a formula.  There was certainly an element of  frustration, but it was also FUN! I’m glad we discovered our perfect  formula. Now our focus is on new shades and expanding outside of lip.  We’re continuously working on creating high-performing cosmetics with  awesome ingredients, awesome packaging, and showcasing diverse imagery  of women to remind them that they are enough! (Read more.)