Asker's rating. 1  Child Proof Scissors. Source(s): https://shorte.im/a0FCw. 2  This Site Might Help You. RE: 3  Usually you can let them start using scissors around the age of 2 1/2 or 3 .. just make sure they are appropriate for their age.. And watch them while they are using them.. 4  It all depends on the child.. You should be able to tell when they're ready to understand that it's not a toy and he can only use them when an adult is supervising.. My son was using safety scissors by 3 yrs. For your 2 year old, I would suggest buying her plastic scissors with a safety edge. I think my daughter and son started to learn at 3. If the scissors are childproof (Plastichandles and blunt) then they can start anytime if they are supervised! (obviously not before 2 years of age).