When do I wax my upper lip?

Hello - I have never posted to a forum like this before, nor have I ever waxed my upper lip.

How do I know when it's time to do this? Not that I want to, but, I just don't know how noticeable my upper lip hair is.

Can someone please share with me their experiences with waxing, tips, and how often I should wax?

I am going to be 30 in three months, and I've never waxed my lip before, but starting to wonder if it's time? The hair is pretty blonde for the most part, but it seems to be getting just a little bit longer than before.

Thank you in advance for your input!