A newborn baby has delicate nails and fingers, so it is highly recommended to use scissors instead of clippers.
When babies are 3 months old, a longer blade or stronger scissors is required to trim their nails. And, only when they reach 9 months old & above can we safely use nail clippers on babies.
Newborn scissors suitable from 0 month old and up
Baby tweezers suitable from 0 month old and up
Nail clipper suitable from 9 months & above