There are usually some kind of small shelves intended for glasses just next to doors to many saunas. I don't think the problem is possible damage, but fogging. The glasses are cold, there is higher humidity inside plus you are sweating and sweat from you face evaporates, so the glasses are continuously fogging up. You wipe them off and in a while they fog up again. Time to time you can see people wearing glasses in sauna, but usually after they wipe them off few times, they usually take them off.

I have heard the heat is bigger problem for contact lens, because they try up very quickly.

I have the recommendation not to take plastic lenses inside and to use one day disposable contact lenses from an opticians website. I would follow their advice.
I myself have taken metal framed glasses with real glass along. These are not affected.

I keep my glasses on as I feel very uncomfortable when I'm not wearing them. I've had both plastic and metal glasses, no problem. The metal ones get hot, but if you already have them on when entering this isn't an issue (same as wearing a metal ring is not an issue). There are shelves to put glasses, but never got any comment on keeping them on.
Also fogging is actually not an issue in a sauna, as the air is so dry, there is no water to cause the fogging.

The heat of the sauna will damage anti-reflective coating on your glasses. I've used an old pair (metal frames, plastic lenses) many times without problem, but they are already very damaged. There are usually places to out your glasses outside the sauna somewhere.

For the last time, don't use plastic lenses in the sauna cabin. This is not my advice, it is an opticians advice.
Those who want to tell us it is no problem should please watch jackass videos and stick to their suggestions about how to spend your time.

Kuratorium gutes Sehen
 

Here a link to an official information page on using contact lenses in Sauna by the german association of opticians.

https://www.sehen.de/kontaktlinsen/k...-in-der-sauna/

+ good vision
+ better than glasses as not hotter than 40°C (directly on the eye)

- germs
- dry air might make them feel uncomfortable

recommandation:
- never put your fingers into the eye
- close your eyes when taking a shower
Most importantly:
- use dailies and not monthly lenses

Lesbians in sauna
 

Recently, I had a pleasant experience at a sauna venue in Krakow, Poland. Although it's in Poland, the venue is organized in the traditional German-style, with Aufguss sessions and a no-swimsuit policy. Typically, the majority of the visitors are men, but you can also see couples and single women.

My last visit was quite enjoyable, with a handful of women present, some covering their breasts, while others were fully nude. Shortly after checking in, an Aufguss ceremony was about to begin. I found my spot, glanced around the benches, and did my best to be discreet. Among others, I noticed a pair of women — one with a tomboyish appearance and the other more feminine. They were both topless but had their waists covered. There were others, too, either covered or nude.

After the ceremony, I headed to the shower area. That’s when I had my first surprise — the tomboyish woman had a full bush, which I found unusual for someone in her late twenties or early thirties. However, I didn’t see her friend there.

After my shower, I went to the swimming pool. There’s usually a chance to catch a glimpse of something while women descend the pool ladder, so I was hoping for an interesting view. To my surprise, the two women — the tomboyish one and her friend — were already swimming back and forth in the pool.

Then, something unexpected happened: they stopped and began kissing each other. I had never seen anything like it — two completely naked women passionately kissing in a public swimming pool. I continued swimming, but they alternated between kissing (with their hands underwater, so I couldn’t see what they were doing) and swimming from one end of the pool to the other.

I noticed a few other interesting things later on, but those two definitely made my day. And yes, the more feminine woman also had a full bush.

Neptunbad in Cologne
 

My girlfriend and I went to Neptunbad in Cologne last weekend. We spent the day in the city and decided to go to the spa during the evening.

This was the first time we went to a spa so we were very excited. We went to hotel saunas in the past so my girlfriend is comfortable with being nude in the sauna and mixed shower but a busy public spa was the next thing we wanted to try.

We are 26 and 23, and my girlfriend was easily the youngest girl there.

We rented a towel and went to the changing room to get naked. The towel we got was quite small so when my girlfriend wrapped it around her body, it just about covered her tits and pussy.

My girlfriend is a 23yo slim blond, small tits with an athletic body that is confidently nude.

After changing, we did a tour of the spa to see what was available and decided to try the outdoor sauna first.

In the sauna, there was also another younger couple sitting in the corner. A couple of minutes later they left. The girl was covering her tits as she walked by us but I got a good look at her shaven pussy and ass with the tan lines of her string bikini.

We then also left and cooled down in the lounge chairs outside. As I was walking around to see if there were any hot girls we could join in the pool, I returned to my girlfriend and saw that she was sitting with her legs slightly open and I could see her bald pussy from under the towel that was way too small. At that moment the aufguss of the other outdoor sauna was done and all naked people went to the shower, passing my girlfriend and enjoying her pussy showing.

We then walked to the next sauna, passing by the indoor pool where a young slim pregnant girl was walking fully nude to the pool and gave everyone a good look at her hot body,

Later on in the evening, we were in another outdoor sauna with a window that overlooked the outdoor Pool. My girlfriend saw another young 28yo couple walking and notified me. We saw that they were going to join our sauna and we both got excited to get a look at them. The girl entered with her towel covering herself so I couldn't get a good look. Sd sat behind her boyfriend in the back and was covering herself. She looked to be shy.

After the sauna, I sat in the outdoor pool and saw the young couple leave for the shower, again trying to get a look but was unsuccessful. Later on, I again saw the girl leave a sauna, and go to the shower but now she also went for a swim in the indoor pool. For this, she had to leave her towel, climb the stairs, and go into the pool. The pool is located in the middle of the room so everyone can see you swim. We both got a good look at her, a beautiful girl with small tits, shaven pussy, string bikini tan-lined ass, and an athletic body. My girlfriend was comparing herself with her and I said she looked just as hot.

Other highlights were the 30-year-old friends with c cups sitting next to us and following to the pool and other hotties that we saw leaving the hot springs and giving us a good look before putting on their robes.

Thank you for exciting story! Is your girlfriend just comfortable with being nude, or do you think she likes attention? Or is she even an exhibitionist? Have you already discussed it?

She is just comfortable with being nude, but is not really looking at others or wants to be looked at.

The first time she went nude was when we booked a hotel with a pool and spa.

She thought the spa was clothed but I saw on the website it was nude but didn't tell her.

It was only when we were in the pool that I suggested going to the spa, even though it was nude. I said this was our chance to try it as it was not very busy. She was a bit hesitant but said if it was included in the price we could give it a try.

She was immediately comfortable with being nude and was instantly wet when we were alone in a sauna. She started touching herself and playing with my dick.

After this, I said I wanted to try this again in the future and so we went to a real spa on holiday.

When we first met, she was a bit more conservative but after a while, I started buying cheeky bikinis for her, convineed her to walk braless in public and this summer she went topless on the beach for the first time.

My ultimate goal would be to go to a nude beach together