Here some options that don't involve vandalizing your face.
1.
Ponytail holders Stop Your Glasses from Slipping Off Your Face with Ponytail Holders 2.
Ear Hook Anti-slip Holder for Glasses 3.
Nerd Wax
The Original Glasses Wax
lifehacks.stackexchange.com/users/11030/Samuel Rocha García
This sounds like a joke, but I found it works well for quite some time before needing to pull my glasses up by hand.
I learned to pull my glasses up with my ears!
Doing that taught me how to wiggle my ears and get children to laugh, so that might be an additional reason to learn.
Dunno how I started, but I was being frustrated and started not being frustrated.
Sort of an unconscious learning system.
lifehacks.stackexchange.com/users/11038/user1678941
There's no need for extra gadgets or body mods, you simply need to make the glasses a tighter fit.
Tighten the screws fixing the arms to the main part of the glasses.
Carefully bend the arms so that fit more tightly to your head and, in particular, so the hooks on the end fit tightly behind your ears.
lifehacks.stackexchange.com/users/11042/Jack Aidley
I have always used https://wedgees.com/ Funny name but they really work.
They always sends me more than I order
so they are pretty inexpensive.
I have on my readers and sunglasses.
lifehacks.stackexchange.com/users/15639/jack
Here's a simple solution that might work.
Cut two small rectangular pieces from the sticky area of a Post-It note.
Fold each in half, sticky side out.
Stick one to each nose piece of your glasses.
Double sided Post-
It tape is also available, but most people aren't going to have it handy.
lifehacks.stackexchange.com/users/10378/James
One frequent reason for glasses slipping is perspiration.
A simple fix, assuming that is the source of the problem, is a to apply a bit of antiperspirant to each side of the bridge of the nose.
Clear and unscented would be my choice.
lifehacks.stackexchange.com/users/11040/maxwello
Go to an optician and ask them to adjust the fit?
I've done it a couple times
so far, they have a machine in the back room usually.
It's legally mandated to be free in Canada, but I don't know what the rules in the US are.
lifehacks.stackexchange.com/users/11065/pmelanson
My wife swears by these Silicone Anti-Slip Ear Grip Hook For Eyeglasses .
She says it's funny; they're something like 50 cents each, but she feels like they've changed her life.
She used to hate wearing her glasses.
(It looks like there's a similar product in Samuel's answer; I made this answer only because my wife was so happy about this exact link in particular.)
lifehacks.stackexchange.com/users/11034/ngb
Rubber coat the applicable areas,
e.g. places touching the nose or ears.
Lots of color choices available, which makes this a fun option!
The best part is that on most surfaces, the finished material peels right off with an intentional (shall we say more than moderate?)
amount of force.
lifehacks.stackexchange.com/users/10978/tniles
Glasses will often slip when I'm jogging.
Got this pair of ear/spectacles hook. .
Tried a few different types of rubber ear hook and this is the most comfortable so far.
Here's more information, http://betasimplicity.com/wedgeclassic.html
I'm not sure whether adjusting the glass temple will work for all people.
Once an optician told me that if the glass temple is adjusted properly, it will not slip.
And when he turned round, I see him having ear hooks on his glasses...
lifehacks.stackexchange.com/users/12943/Speckkies
Buy lighter frames.
You have a nice Persol frame.
I have John Varvatos.
I love the look, but they are somewhat heavy and, much to my frustration, frequently slide down my nose, too.
I have a friend who just got a pair of glasses with featherweight Oakley frames.
I tried them on and those babies aren't going anywhere.
I will be getting a similar pair when it's time for my insurance to spring for a portion of the frame cost.
lifehacks.stackexchange.com/users/13228/Duhnskap
I am currently using these glasses:   They slip a bit down my nose when I move suddenly or when I look at the ground. I have to re-adjust them and that's a bit inconvenient.  Is there anything I can do to prevent them from slipping down my nose?   P.S. I am aware of  this question  but my glasses have fixed nosepieces and that's why I'm asking this as a separate question.
How can I stop my glasses from slipping down my nose?
lifehacks.stackexchange.com
<eyeglasses>
lifehacks.stackexchange.com/questions/10272
lifehacks.stackexchange.com/users/10881/A. A.
There are many different ways to stop your glasses falling down your nose, but you could consider using ear hooks, a ponytail holder or glasses wax. You might also try applying some anti-perspirant to the bridge of your nose or as your optician for a tigher fit. You could also lightly bend the arms so that they fit tightly behind your ears. Alternatively, you could learn to pull your glassses up with your ears! The options are to use ponytail holders, ear hooks, nerd wax or original glasses wax, learn how to pull up glasses using your ears, adjuts your glasses to fit more tightly, use wedgees, get a lighter pair of glasses, apply post-it notes or antiperspirant to the glasses, ask an optician to adjust the fit or get some lighter glasses.
Use ponytail holders, ear hooks, nerd wax or original glasses wax. Learn how to pull up glasses using your ears. Adjust your glasses so they are a tighter fit. Use wedgees. Cut out bits of sticky post-it notes and attach to your glasses. Apply some antiperspirant to each side of the bridge of the nose. Ask an optician to adjust the fit. Use ear hooks - there are a number of products available. Buy lighter frames.