I'm not too much of a sweaty person on the face, only mainly around the lip area.
I applied the face saver gel during the summer time to give it a try, it did give my face a glow, but I didn't sweat at all. my husband tried it on too and he sweats more than me around his T zone, and he also didn't sweat but it gave our faces a little bit of a glow, looks like we came out of a facial.
I would apply Face Saver Gel as a primer more than on its own just so you don't risk having a little bit of shine.
I applied the gel after I cleansed my face and I let the gel sit and dry on my face before going out. but next time I will be applying it under my make up for sure. it does also smell a little funny, but it does the job and the smell isn't awful.
I've purchased this a few times over the years. In Summer I am a sweaty mess and someone recommended it to me. My main problem area is my top lip, it's so annoying and makes me feel very uncomfortable.
I find the cheapest place to by from is the Chemist Warehouse. It comes a 50g squeezy tube, really easy to squeeze out a small amount. It is a thick, clear gel.
I only apply to my problem areas, a little bit definitely goes a long way. If you apply too much it stays sticky and feels really horrible.
For me I found this works quite well. It gives me a weird feeling though, it feels like I'm sweating but there is nothing there. On really hot days there is definitely some sweat coming through. I recommend to give it a go if you have sweaty face issues that are bothering you.