The Hair for Hope fundraiser aims to attract at least 5,000 participants and raise S$2.5 million.
The annual charity event by the Children’s Cancer Foundation is now into its tenth year.
Some 1,400 people are expected to get their heads shaved this weekend in support of cancer patients.
15-year-old Jeremy Tan Hong En, who was diagnosed with cancerous brain tumour in December 2007, had his head shaved for the first time by Education Minister Heng Swee Keat.
Mr Heng noted that this year six out of 10 who shaved their heads were students.
And compared to 2011, the number of student who have shaved their heads has increased by 36.5 per cent.
Since May this year, 2,883 individuals had their heads shaved at 44 satellite events, including 14 school satellite events.
Among them were 1,735 students.
Hair for Hope’s main event is held at VivoCity till 29 July.