A 46-year-old Malaysian man and a 51-year-old Singaporean man were arrested.
The boys, aged three years old and seven months old, have been placed in the care of their next-of-kin.
A staff member from a tuition centre stood next to them as this was happening, a witness claimed.
The pilot allegedly said he slept for 30 to 35 minutes during the flight.
The treatment also comes with a complimentary haircare kit worth S$45.
The guest also complained of an untidied room and waits of several hours to speak to hotel staff.
If convicted, an individual can face a fine of up to S$313,000 and/or up to three years' jail.
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“Scalping is parasitic. It creates nothing. It contributes nothing,” Mr Low said.
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