It's hard for me to tell what's doing what to my skin at the moment as I'm doing All The Things...
I use a Ziip daily, I have an Omnilux Contour LED mask I use daily, a NIRA laser. I have prescription treinoin from Dermatica (highly recommend) and their vitamin C as well, then niacinamide, EGF (epidermal growth factors), peptides (Matrixyl 3000 and copper peptides from the Ordinary) and tons of Korean moisturing toners and moisturisers (Korean skincare is so cheap if you buy from stylevana.com and their moisturising toners and thick moisturisers are great for using with tretinoin). The thing which has made the most difference is hands-down the tretinoin (only been using it since August) and I highly recommend Dermatica for that. Then there are some great FB groups for tret use which cover the moisturising and breakouts which can happen at first.
Which is all to say - the Oestrogel I put on my face is just part of all this. I just save the bottles when there is partial pumps left and I put a tiny blob (about the same as Testogel size) on my face. It is quite drying because it has alcohol in it so keep it away from the eye area. I leave it on a couple of hours and then wash it off. Because I have about 650000 products to put on my face.
Obs when I'm busy all day I can't use all this, but when I'm working from home I can easily wash my face and apply a new thing whenever I have a wee or make a cup of tea...