The right time to start plucking your eyebrows is between twelve to sixteen years old, unless they desperately need help dealing with a unibrow. Unibrows are best taken care of at a younger age, as hair grows is reduced from threading sessions.
At a young age, your kids may become self-conscious about their brows and express their need for small changes. This is perfectly fine, and threading avoids the risk of overplucking those beautiful eyebrows of theirs.
