Toddler - head shave or tonsure

Hello all,

I got a tonsure for my baby done in India. The baby had thin hair before that during the last 1 and half years. People told me repeated tonsures will help hair growth to be better so I went to a salon here in US for another head shave. They said they only use a clipper here and cut it at 0 level. It is close to a clan shave but it still left some hair on. My question is for the hair growth, this kind of shave may not help, right? Now if I do want to do a clean shave , is there any place I can go to? The salon says it is a rule not to use blades in the state. We live in Virginia. Let me know if it is ok to leave it like this now or should I give another shave immediately. Thanks!