How long does the oil-controlling effect of Skin Botox usually last?

By the afternoon, my T-zone gets drenched in oil and shines so severely that I was strongly recommended Skin Botox for sebum control. No matter how much I use blotting paper, oil builds up quickly, and the sebum causes frequent breakouts, so I'm incredibly stressed. I really want to be free from this oiliness. I heard that injecting Skin Botox into the shallow layers of the skin suppresses the sebaceous glands to keep the skin matte and dry, but I'm wondering if it really works. I'm curious to hear your honest experiences regarding whether the excessive oiliness on your face, which even creams or medications couldn't control, decreased dramatically after getting Skin Botox. I'd also like to know how long the oil control usually lasts. A lot of people are getting this these days, right?