Raihan Jouzu Syamsudin, a student from SMPN 57 Surabaya, has successfully made an extraordinary innovation. He managed to convert waste onion skins into environmentally friendly marker ink.
Raihan was able to collect up to 3.12 tons of onion skins from 25 partners consisting of markets and neighborhoods around the city of Surabaya. Curious about Raihan, who has this brilliant idea?











