We bought it for a four-month-old baby because he had a lot of hair and the conventional hairdryer, besides being hot for a baby, had a very strong air intensity and often choked him.

This particular hairdryer is small and lightweight.
It has two levels of air intensity, one gentle and warm, almost completely silent, and a second one stronger (but still calm in intensity and noise) and warmer without burning the baby's skin, even if you hold it against his skin.

The hair dries very quickly, and while someone might say that having a separate hairdryer for a baby is a luxury, only when you try it will you realize how necessary and suitable it actually is.

The cord could be slightly longer, but this is not a problem.
I believe that its use is for baby age, up to 2.5 to 3 years old, but maybe even older if the child doesn't have much hair.

As for its operation, to make it work, you have to hold down a switch, but it is in a good position, so this is not a problem either.
However, just because it has this safety feature, it doesn't mean that we should let the child dry his hair on his own.
Children are children, and electricity doesn't discriminate.
The use should always be done by an adult, especially when it comes to the contact of an electrical device with wet skin!