Wearing no makeup at nearly 40

Opinions please! So, I have never been much of a makeup wearer, mainly due to the fact that my skin is super oily and it tends to slide off pretty quickly. I have found that even waterproof eye makeup isn't oil proof, so I tend to end up with a bit of a panda eye look by the end of the day if I try wearing mascara/eyeliner. However, I wonder if I might come across as less 'professional' in my work setting (I am a veterinarian, I have my own business). So, as a business owner/professional person, do you think it is important that I make the effort and wear makeup in that setting? Do you think women who wear no makeup look 'unfinished', like they haven't made an effort? (this is me bare faced, in my regular 'weekend casual' mode) :)