# Cheongju body slimming esthetic: lie-down SlimOn treatment at It's J - By Seoha (https://superchart.com/en/@chungcheong-skin-shelf/) - Written Sep 9, 2026 - Local places › Hair & beauty salons › Cheongju, Chungbuk - Sponsored: This review was written with a sponsored store visit. - English edition: https://superchart.com/en/@chungcheong-skin-shelf/cheongju-slimon-body-care-itsj/ - Also in: [한국어](https://superchart.com/ko/@chungcheong-skin-shelf/cheongju-slimon-body-care-itsj/index.md) ## In short It's J Cheongju (이츠제이 청주점) is a total beauty shop in Geumcheon-dong, Cheongju, offering hair, nails, skin care and body treatments in one building. The writer had an InBody scan, then a SlimOn body treatment made up of about 30 minutes of TNT and 30 minutes of Bio Photon, and compared the before-and-after numbers. For anyone curious about a treatment you receive lying down, It's J Cheongju was an impressive pick. ## Good to know - **Location**: 2F, Units 201–203, 250 Junggogae-ro, Sangdang-gu, Cheongju, Chungcheongbuk-do, South Korea (충북 청주시 상당구 중고개로 250 2층 201~203호) - **Hours**: Tue–Fri 10:00–20:00, weekends until 16:00 - **Closed**: Every other Sunday, every Monday - **Parking**: Available in front of and behind the shop - **InBody condition**: Fast for 3 hours beforehand for an accurate scan - **TNT treatment time**: About 30 minutes - **Bio Photon treatment time**: 30 minutes *as written by the visitor on Sep 9, 2026* Have you ever heard of a lie-down diet? hahaha It's a treatment I'd been curious about for a while, and I finally went and got it. I was so happy with it and the results were amazing, so please read on! ![Exterior of It's J Cheongju](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-01-jxe2s-900.webp) ## It's J Cheongju: location and visitor info - Location: 250 Junggogae-ro, Sangdang-gu, Cheongju, Chungcheongbuk-do, South Korea (충북 청주시 상당구 중고개로 250) - Hours: Tue–Fri 10:00–20:00, weekends until 16:00 - Closed: every other Sunday, every Monday - Parking: available in front of and behind the shop It's J (이츠제이) is a total beauty shop with everything gathered in one place: a hair salon, nails, skin care, waxing, semi-permanent makeup, body treatments and more! Being able to get all of that in a single building... honestly amazing. I spotted celebrity autographs on one wall too haha As expected of It's J! ![Autograph wall inside It's J](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-02-7w7aq-900.webp) It's split across three floors like this. I went up to the 3rd floor for my body treatment. ![3rd-floor body treatment area at It's J](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-03-1u27q-900.webp) There's a dog in the 3rd-floor treatment room, and it's such a sweet, sweet, sweet, sweet cutie 🐾 ![The dog in the 3rd-floor treatment room](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-04-nonlb-900.webp) ![The dog in the 3rd-floor treatment room](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-05-3ayfn-900.webp) The interior was really luxurious and the director was so kind 🙂 ![Luxurious body treatment room interior](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-06-pvu7r-900.webp) The body treatments cover not just dieting but detox, postpartum care and even wedding prep. ![Body treatment program guide](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-07-6pzw4-900.webp) ## How does the SlimOn body treatment work? The treatment I had was SlimOn, a new-concept diet where you lose weight lying down. Before the treatment, the director had a thorough consultation with me and carefully checked my body, lifestyle habits and so on! ![Consultation before the SlimOn treatment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-08-1ivew-900.webp) ![SlimOn body treatment consultation materials](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-09-13qa0-900.webp) She also explained the SlimOn treatment in detail haha After a body composition analysis with an InBody scan, there's the TNT treatment, which builds muscle and reduces fat, and then the Bio Photon treatment, which uses growth-ray light energy. ![SlimOn treatment explanation materials](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-10-1gunt-900.webp) They say just 45 minutes of Photon gives the effect of 5 hours of running. Isn't that amazing? hahaha And all you do is lie there!!! ![Bio Photon treatment equipment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-11-15fzc-900.webp) We did the InBody scan first. That thing on the left is the Bio Photon treatment. ![Gown and disposable underwear](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-12-119kg-900.webp) I undressed fully and changed into a gown and disposable underwear. ![Preparing for the InBody scan](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-13-av5v4-900.webp) ![Preparing for the InBody scan](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-14-1pj81-900.webp) For an accurate InBody reading I fasted for 3 hours before coming. (They give you all the instructions in advance!) After the scan, the director explained my body type in a way that was easy to understand. ![InBody scan used to explain body type](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-15-1qv3t-900.webp) The InBody scan is done twice, before and after the treatment, and I was so curious what kind of change there'd be. ![InBody scan results before the treatment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-16-69voi-900.webp) ## The TNT treatment felt like an ab workout After the InBody scan, we started with the TNT treatment. TNT is a muscle therapy & body slimming treatment that builds muscle and reduces fat, plus a womb therapy using a pelvic floor chair. ![TNT body treatment equipment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-17-1q1f0-900.webp) She placed it on my abdomen, and all I had to do was lie there!! hahaha I think it's even better because you can focus the treatment on whichever area you want. ![TNT treatment focused on the abdomen](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-18-1nbnh-900.webp) The intensity is adjustable too, and the director checked in with me step by step and set it to a level that was comfortable for me. Can you see the slight twitching in the video?! My belly kept flinching and quivering haha It really felt like doing an ab workout. ![Abdominal stimulation during the TNT treatment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-19-b53pw-900.webp) ![TNT treatment in progress](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-20-1b0kt-900.webp) ## Bio Photon treatment and the InBody before-and-after After about 30 minutes of TNT, I had the Bio Photon treatment. Bio Photon uses growth-ray light energy to flush out waste and toxins and promote fat breakdown, they say. ![Inside the Bio Photon treatment capsule](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-21-10g3p-900.webp) For this one you also just get into the capsule and lie there for 30 minutes. Every single treatment is done just by lying down hahaha There's a phone holder so you can put on a video and watch, but it was so warm and cozy I got sleepy 😌 ### InBody before and after the treatment ![InBody comparison data before the treatment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-22-11rkv-900.webp) Before ![InBody comparison data after the treatment](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-23-6942j-900.webp) After Weight 0.4kg ↓ Skeletal muscle mass 0.6kg ↑ Body fat mass 1.4kg ↓ Visceral fat level 1 level ↓ Visceral fat area 4cm ↓ ![InBody before-and-after results](https://img.superchart.com/images/cheongju-slimon-body-care-itsj/cheongju-slimon-body-care-itsj-24-12pv3-900.webp) Isn't that amazing? I just lay there for an hour, and my body fat really went down while my skeletal muscle mass went up. I'd been so curious whether you could really diet comfortably lying down, and seeing it in the results made it even more, more, more surprising. I think this would be a big help for anyone preparing for a diet, detox or postpartum care 👍 It's J, the Cheongju esthetic for dieting, gets my full recommendation ~@ ## Where it is - It's J Cheongju Esthetic (이츠제이 청주점 에스테틱) - 2F, Units 201–203, 250 Junggogae-ro, Sangdang-gu, Cheongju, Chungcheongbuk-do, South Korea (충청북도 청주시 상당구 중고개로 250 2층 201~203호) - 충청북도 청주시 상당구 중고개로 250 2층 201~203호 - 36.6255736, 127.5107694 - Google Maps: https://www.google.com/maps/search/%EC%9D%B4%EC%B8%A0%EC%A0%9C%EC%9D%B4%20%EC%B2%AD%EC%A3%BC%EC%A0%90%20%EC%97%90%EC%8A%A4%ED%85%8C%ED%8B%B1/@36.6255736,127.5107694,17z --- Superchart · https://superchart.com/en/@chungcheong-skin-shelf/cheongju-slimon-body-care-itsj/ · https://superchart.com/llms.txt