A terminally ill Dutch boy has dared people all over the world to paint their nails for a cause. Diagnosed with brain cancer in May, Tijn Kolsteren has raised over $2.1 million with his nail painting challenge, which will be donated to the Red Cross as apart of an annual campaign by Serious Request 3FM.

Specifically, the philanthropic 6-year-old hopes the money will help to fight pneumonia among children. The donation page reads: "Most of the poor kids infected with pneumonia don’t even live to be 5 years old. That is why we’re standing up to fight." Famous participants of the nail painting challenge include DJ Armin van Buuren and Dutch politician Geert Wilders.