Cheongju body contouring esthetic: TNT 10 and Bio Photon at It's J
In short
It's J Cheongju Esthetic is a skin and body care studio on Junggogae-ro in Sangdang-gu, Cheongju, Chungbuk. Visiting during a diet plateau, the writer had 30 minutes of abdominal TNT at level 10 and 30 minutes of Bio Photon at 75–85°C, with an InBody scan before and after: body fat fell from 19.4% to 15.1% and body water rose from 31.5L to 33.0L. It's J Cheongju Esthetic suits dieters who want to lie down and get circulation moving when the scale has stalled.

Good to know
- Location
- 250 Junggogae-ro, 2F Units 201–203, Sangdang-gu, Cheongju, Chungbuk
- Hours
- Tue–Fri 10:00–20:00, weekends 10:00–18:00
- Closed
- Every Monday / every other Sunday
- Parking
- Available in front of and behind the building; parking details sent by text when you book
- Treatment received
- TNT (abdomen, level 10, about 30 min) + Bio Photon (75–85°C, 30 min)
- Floor layout
- 1F hair salon & nail art / 2F skin care, lashes, waxing / 3F body care & semi-permanent makeup
- InBody before
- Weight 53.4kg, skeletal muscle 24.0kg, body fat mass 10.3kg, body fat 19.4%, body water 31.5L
- InBody after
- Weight 53.1kg, skeletal muscle 25.1kg, body fat mass 8.0kg, body fat 15.1%, body water 33.0L
as written by the visitor on Aug 20, 2026
📍 Location: 250 Junggogae-ro, 2F Units 201–203, Sangdang-gu, Cheongju, Chungbuk, South Korea
⏰ Hours: Tue, Wed, Thu, Fri 10:00–20:00 / weekends 10:00–18:00 / closed every Monday, and every other Sunday
🅿️ Parking: available in front of and behind the building

Hi, this is Yeondaeng 🩵 I'm dieting every single day 🥹 and after keeping it up for so long, my plateau got long too, so I went to It's J Cheongju Esthetic, a diet-focused esthetic in Cheongju. Eating less and moving less because I had no energy meant my circulation felt like it was dropping. After visiting It's J for diet care in Geumcheon-dong, Cheongju, it felt like my stuck diet finally broke open 🩵
Where is It's J Cheongju Esthetic, and is there parking?
It's J Cheongju Esthetic sits right next to a big road at 250 Junggogae-ro, Sangdang-gu, Cheongju, so it was easy to find 🚗 You can drive straight up from the roadside to the front of the building, and the space is wide enough to pull in comfortably.


If there's no spot in front of the building, you can park behind it. They send detailed parking instructions by text when you book, so no worries there!!! 💛 🅿️ 💛

Inside It's J Cheongju Esthetic floor by floor, from the 1F hair salon to 3F body care
It's J Cheongju Esthetic spans three floors. The 1st floor has a hair salon and nail art, the 2nd floor has skin care, lash, and waxing, and the 3rd floor has body care and semi-permanent makeup 💇🏻♀️ Usually you'd go to a hair salon, a nail shop, and a skin clinic all separately, so being able to handle everything in one building is really convenient.



This is the 1st floor! Maybe because the interior is so bright and clean, I felt good the moment I walked in 💛 The salon space was pretty spacious, and there were signs that celebrities had been there. That probably means it's a trusted place, right?

This is the 2nd floor! I had my treatment on the 3rd floor so I didn't get a proper look around, but from a glance the staff seemed to be moving busily. Must mean a lot of people come for skin care 🧖♀️ If you want skin care in Geumcheon-dong, Cheongju, this seems like a convenient place! It really is an era where you have to work hard on your skin to look pretty... 🧐

From here it's the 3rd floor, where I actually had my treatment! Right from the entrance there's all kinds of body care info posted up. This was my first time at a Cheongju diet esthetic so I walked in a little nervous 😛
There was a sign on the stairs saying there's a dog. Since I live with a dog myself, I was so curious who I'd meet 🐶 There was a small, cute chihuahua haha. Even the growling and barking was just its cute way of saying hi, so I ended up petting it for a while because I wanted to get close!

What are TNT and Bio Photon at It's J Cheongju Esthetic?
Once you go into the 3rd floor at It's J Cheongju Esthetic, the first thing that happens is a consultation. You fill out a checklist for the consultation, which felt like a simple survey so it was no pressure at all! Based on the checklist, they looked at my lifestyle habits and eating habits.


The treatments I had were TNT and Photon ~! TNT is a magnetic-field-based body slimming treatment that induces muscle contraction and relaxation, helping with body line and muscle therapy 🩵 Bio Photon uses a growth wavelength to help raise the body's core temperature, help clear out waste through sweating, and give a felt sense of recovery, they told me 💙

After the short consultation, I was shown to a room. Once inside there was a gown and disposable underwear to change into! Having disposable underwear ready was such a nice touch 😛


InBody numbers before the treatment
After changing into the gown, I got my InBody checked. Weight 53.4kg, skeletal muscle 24.0kg, body fat 10.3kg, body fat percentage 19.4%. That's how the first InBody came out. I was half-convinced going into the treatment, but the difference afterward was huge! I'll show the before-and-after InBody at the end, so keep reading haha.


Abdominal TNT at level 10: it really feels like doing crunches
The first treatment was TNT. On the checklist I'd written that my abdomen was my biggest concern! Maybe because pregnancy and childbirth weakened my core, my stomach never went as flat as before even after losing the same amount of weight. When I mentioned that was my main worry, they did TNT on my abdomen, and you can set the intensity from level 1 to level 10. I ended up going with level 10!
I genuinely got sore muscles like I'd done an ab workout. You know that feeling when you're doing crunches hard and your abs pull so tight your breath catches? That's exactly what it felt like at first, and I wondered if I should lower the intensity, but I got used to it quickly and it was fine. It lasted about 30 minutes, and when I sat up afterward my back was covered in sweat 💦 It really seemed to work well!

Bio Photon for 30 minutes: how much do you sweat?
The second treatment was Bio Photon! I usually love things like unggama (charcoal kiln saunas) and saunas in general, so I started this one with high expectations 🧖♀️
It runs for 30 minutes at a max of 85°C and a min of 75°C, and wow... it was genuinely so refreshing and good ㅠㅠㅠㅠㅠㅠ Since you can't use your hands during the treatment it could get boring, but they set up a stand so I could watch YouTube. I lost track of time watching videos while getting treated!


After the Photon session... the sweat, isn't it wild? I sweated so much I had to wipe it off with a towel. It really felt like I'd done a hard cardio session. Apparently 50 minutes of this has the same effect as 5 hours of running. Being able to do diet care in Cheongju this comfortably.. it's honestly amazing.. why didn't I know about this sooner..

After sweating so much, they carefully told me to get up slowly since I might feel dizzy standing up too fast. Coming out and drinking a glass of water, there were also some simple snacks. Good to grab one if you suddenly feel your blood sugar drop!
InBody results after one session — body fat 19.4% to 15.1%
After the treatment, I measured InBody one more time. Weight 53.4kg ➡️ 53.1kg, skeletal muscle 24.0kg ➡️ 25.1kg, body fat 10.3kg ➡️ 8.0kg, body fat percentage 19.4% ➡️ 15.1%, body water 31.5L ➡️ 33.0L. That's a huge change, right..?
I didn't expect a change this big.. honestly I thought the weight drop was just from sweating? But my body water actually increased after the treatment! It really seems like only the unnecessary waste got flushed out, and with better circulation my body water went up. This really seems perfect for a diet plateau!!!

Expansion opening event and review gift at It's J Cheongju Esthetic
They mentioned they're running an expansion opening event, so I took a photo of the pricing since I thought it'd be worth sharing. During the summer you can get it at a discount off the regular price, and they even throw in extra sessions ~! If it were just a bit closer I would've signed up for a membership.. If you live near It's J for diet care in Geumcheon-dong, Cheongju, go try it out soon haha! Getting the effect of exercise while just lying down comfortably — how great is that!

If you take part in their Naver review event, they even give you a sheet mask 🧴 Since core body temperature rises during the Photon treatment, you'll want a cooling mask on your face to bring the heat down! Let's make sure to take advantage of every bit of care available to the end 💙

That's it for my review of my visit to It's J for diet care in Cheongju. In weather this hot when it's hard to even exercise, being able to get treatment this comfortably ㅠㅠ Everyone these days is so serious about self-care, and honestly you have to keep dieting your whole life, so I really recommend this Cheongju diet esthetic — it can break through a plateau and it's comfortable too 🩵 If I hit another plateau, I'll definitely come back again! I hope you all get to try it at least once haha.
Where it is
250 Junggogae-ro, 2F Units 201–203, Sangdang-gu, Cheongju, Chungbuk, South Korea충청북도 청주시 상당구 중고개로 250 2층 201~203호





