After 30, was it too late to correct?

Is it OK if the calibration is over 30?? The fact that my front teeth are slightly overlapping always catches my eye when I smile, but I think it's a bit embarrassing to wear braces while going to work. I commuted to work near Live Dental Hospital and wanted to go there, but I heard that they also have transparent braces. I have to go to the dentist to know if this is possible in my case, right? I want to hear reviews from people who are over thirty!