Many chemists and scientists were, at some point in their childhood, attracted to bright special effects: the changing colours of sparks and bright crackles of fireworks. Growing up, we become used to technicolour fireworks shows and firecrackers. Many people even think that nothing ever changes in pyrotechnics. But, in fact, experts continue to look for new improvements, and they don’t think only about the spectacle – the brightness of flames, their colours, and the duration of burning – but also about safety, including environmental protections.