Meh... I've used TO retinols and I honestly haven't seen any difference. This is so cheap and friendly on the wallet compared to other retinol options out there.
I'm using it right now, and I really don't like the feeling of the oil on my face. It doesn't sink in and just kind of stay on the surface of my face, and feels oily for a long time. TL;DR: I didn't notice any difference at all with this product.
I much preferred the La Roche Posay Redermic-R retinol (which suits oily skins).