Deepen your voice, is that a choice

I found an advertisement for a throat spray that helps you deepen your voice. That's interesting, but kind of sketchy. I wonder how many kinds of Vicks products they had to melt together to come up with this product. I think it has a placebo effect. I notice when I try to talk in any kind of voice, it takes me at least a week to conform to a certain type of voice I'm mimicking. This product I think just let's the person want to talk in a low voice which eventually becomes the person's default voice. What do y'all think?