When I was in high school I did a number of experiments in creating my own fireworks. Unfortunately, there wasn’t the Internet and Youtube to better educate me and I made a bunch of duds.
But this is the 21st century and you can learn anything on the Internet. Here is an excellent description / discussion of the chemistry of fireworks.[youtuber youtube=’http://www.youtube.com/watch?v=0Mbf1Pfl_2U’]
Now, how can we use this chemistry to make better cosmetics? hmmmm