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TeethWhiteningStain removalNon-invasive

Teeth Whitening effects, reviews, and prices

How long do teeth whitening results last?

Also known as · Teeth whitening, In-office whitening, Home whitening

Teeth whitening is a treatment that brightens the color of your teeth using a whitening agent.

Common concerns

Yellowing teethCoffee stainsTeeth look dark in photos
Based on clinic deals ₩60,000 ~ ₩700,000

BEFORE & AFTER

Teeth Whitening Before & After

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Cases with verified shooting conditions and procedure details are shown first.

  • Before treatment — 30-Minute Complete Teeth Whitening ProgramBefore
    After treatment — 30-Minute Complete Teeth Whitening ProgramAfter
    Rating 5.0 out of 5
    2022.05.13

    Myeongdong Dental Clinic30-Minute Complete Teeth Whitening Program

    Because I had orthodontic treatment and drank a lot of coffee, my teeth had become yellow, so I wanted to get teeth whitening. While looking into where to have it done, I found it through Eodiseo, and the reviews were good, so I requested a consultation, made an appointment, and visited. I had three treatments and am very satisfied. I had the first and second sessions done at once on the first day, and the third session a week later. I’m also glad that I didn’t experience any sensitivity.

  • Before treatment — 30-Minute Complete Teeth Whitening ProgramBefore
    After treatment — 30-Minute Complete Teeth Whitening ProgramAfter
    Rating 5.0 out of 5
    2022.02.25

    Myeongdong Dental Clinic30-Minute Complete Teeth Whitening Program

    They were very kind. Before getting the treatment, I wasn’t sure if it would really work, but I had three sessions in total. I had the second session about two and a half weeks after the first, and it really was effective. The sensitivity may vary from person to person, but mine only lasted for a short while. I’m satisfied!! The photos were taken before the second session and after the third session.

  • Before treatment — Teeth Whitening in 30 MinutesBefore
    After treatment — Teeth Whitening in 30 MinutesAfter
    Rating 5.0 out of 5
    2022.12.3018

    Orun Dental ClinicTeeth Whitening in 30 Minutes

    I had one session, and it has brightened a bit. I've been busy with work and couldn't have the second treatment, but I'm planning to schedule it again in the new year ^^

Photos may look different depending on shooting conditions, and results vary from person to person even with the same procedure. The text shown with a photo is an excerpt from that review; the full text is in the review section.

464 verified reviews

  • Rating 5.0 out of 5
    Visit verifiedThe K 365 Dental Hospital

    (Incheon) Huangni Escape Project

    I went for scaling and had a whitening consultation, and since I had trust from reading reviews, I decided to proceed with the whitening. It was done on the same day, and my friends said it was painful, so I was a bit worried, but I didn't feel any pain at all. And the results are really great; my teeth became so white, it's amazing.

    2025.05.1211
    Before — (Incheon) Huangni Escape ProjectBefore
  • Rating 5.0 out of 5
    Visit verifiedThe K 365 Dental Hospital

    (Incheon) Huangni Escape Project

    I tried everything from whitening toothpaste to mouthwash that are said to be effective for escaping yellow teeth, But this time, I got professional whitening at the dentist as a Children's Day gift, and It turns out that getting whitening done at the dental office is absolutely the right choice.,,, As expected,,, treatment from a professional is far superior to any SNS whitening device, It's painless, effective, and I highly recommend it.

    2025.05.091
  • Rating 5.0 out of 5
    Visit verifiedThe K 365 Dental Hospital

    (Incheon) Huangni Escape Project

    I like smoking and coffee, so my teeth were yellow and I was very stressed, but I resolved my complex. They explained that my teeth might feel sensitive during the whitening treatment, but it was not painful, and I received the treatment comfortably. All the staff were very kind and the dental clinic is quite spacious. I was satisfied~! I have also recommended it to my friends.

    2025.05.071
    Before — (Incheon) Huangni Escape ProjectBefore
  • Rating 5.0 out of 5
    Visit verifiedThe K 365 Dental Hospital

    (Incheon) Huangni Escape Project

    I heard my friend was extremely satisfied with the teeth whitening, so I looked around and chose this dental clinic to get it done. I'm totally relieved about my teeth now, amazing... With my wedding coming up, I've been extremely anxious and skeptical about many things, so I was really worried, but they explained the precautions thoroughly, and I didn't experience any pain or sensitivity, so I had a very comfortable experience. Thank you so much!!

    2025.04.282
  • Rating 5.0 out of 5
    Visit verifiedGood Sense Dental Clinic

    Confidently Smile One-Day Teeth Whitening - 3 Sessions

    You mentioned that it might be hard to notice the difference since it's already quite white, but it seems to have brightened a lot, and it's definitely not as glaring as when I received it before.

    2025.04.2336
    Before — Confidently Smile One-Day Teeth Whitening - 3 SessionsBefore
    After — Confidently Smile One-Day Teeth Whitening - 3 SessionsAfter
  • Rating 5.0 out of 5
    Visit verifiedThe K 365 Dental Hospital

    (Incheon) Huangni Escape Project

    I hadn't had scaling in a while and, since I was interested in whitening, I inquired and went ahead with it. They explained the precautions well, including the possibility of experiencing sensitivity during the procedure. I usually don't drink much coffee, but my teeth were yellow, which I disliked. This time, I was able to resolve that complex.

    2025.02.175
    Before — (Incheon) Huangni Escape ProjectBefore
  • Rating 5.0 out of 5
    Visit verifiedThe K 365 Dental Hospital

    (Incheon) Huangni Escape Project

    I tried using a whitening machine at home multiple times and just wasted money, but the whitening done at the dentist is completely different!!!!

    2025.02.012
    Before — (Incheon) Huangni Escape ProjectBefore
  • Rating 5.0 out of 5
    Visit verifiedSmart Implant Dental Clinic

    Smart Teeth Whitening

    It was a really busy clinic, but everyone was friendly. The prices were reasonable too. It may not be obvious in the photos, but my upper teeth have definitely become brighter.

    2024.12.0211
    Before — Smart Teeth WhiteningBefore
    After — Smart Teeth WhiteningAfter
  • Rating 5.0 out of 5
    Visit verified365 Dream Dental Hospital

    365 Dream Dental Hospital Tooth Whitening

    I applied for teeth whitening because the price was so affordable!! Before the procedure, I asked various questions, and I appreciate how politely all the doctors explained everything to me. Hehe. The hospital is clean, and I noticed there was a massage chair in the waiting area, so I got a massage while waiting. I want to continue coming here regularly.

    2024.05.2945
  • Rating 5.0 out of 5
    Visit verifiedBlanche Dental Clinic

    Teeth Whitening in Just One Day

    I had teeth whitening done at Blanch Dental Clinic! I was really worried that my teeth would feel sensitive after getting braces since they became quite weak. I'm such a coward when it comes to dental treatments... I made a big fuss about it, haha! But the dentists here were so kind, I was surprised that a dental clinic could be this friendly????? They were the most considerate I've encountered! Haha, if you're a coward like me and want to go to a friendly clinic, this is the place for you!! The dental hygienists were all very kind, and especially Ms. Jimin was incredibly nice. She explained each part of the process and why I was experiencing sensitivity, which made me feel at ease, hehe!!! She is truly a gem...

    2023.09.2214
  • Rating 5.0 out of 5
    Visit verifiedMyeongdong Combi Dental Clinic

    Myeongdong Combi Dental Teeth Whitening 3 sessions for 240,000 won

    I received scaling and teeth whitening. The procedure consisted of a total of 3 sessions (2 sessions during the initial visit + 1 session 10 days later), and immediately after the treatment, I definitely felt that my teeth were about 2 shades brighter. However, after eating, the color reverted somewhat to the previous shade, so I think it became about 1 shade brighter overall. Nevertheless, I had always been self-conscious about my tooth color, and seeing the results, I would recommend it. The procedure was performed by the nursing staff, and the doctor conducted a general examination to check if there were any damaged teeth. I remember that each session took less than 15 minutes. Overall, all the staff and medical personnel were very friendly, and the building looked new with excellent facilities. The waiting time was also not too long, around 10 minutes?

    2023.08.195
  • Rating 5.0 out of 5
    Visit verifiedLucent Dental Clinic

    Just One Day Teeth Whitening for White Teeth in 30 Minutes

    The facilities are clean, and my teeth have become whiter! I recommend it. They advised me to take good care of my teeth, using dental floss regularly as well. The results last for about 3 months. On the day of the procedure, my teeth felt a bit sensitive.

    2023.08.088
    Before — Just One Day Teeth Whitening for White Teeth in 30 MinutesBefore
    After — Just One Day Teeth Whitening for White Teeth in 30 MinutesAfter
  • Rating 5.0 out of 5
    Visit verifiedMyeongdong Combi Dental Clinic

    Myeongdong Combi Dental Teeth Whitening 3 sessions for 240,000 won

    I was concerned about looking yellow when taking photos, so I tried self-whitening methods like whitening toothpaste and LED devices, but they had little effect. I finally decided to go for it, and after just two treatments, the difference is incredible, haha. It's not expensive for no reason. I wish I had done this earlier considering all the money and time I've spent on self-whitening...

    2023.08.033
  • Rating 5.0 out of 5
    Visit verifiedBlanche Dental Clinic

    Teeth Whitening in Just One Day

    I made an appointment near my workplace for scaling and whitening, and I just came back, haha! I really like having white teeth, so I periodically get teeth whitening done, but having that mouth opener thing is always really embarrassing, right? Hahaha! But soon I'll have my white teeth, so you can just think about something else for the next hour^^ A few months ago, I got whitening done at another clinic, and it was so sensitive that I was thinking of not doing it again, but I recommend this place for those who are interested! It was a little sensitive when the gel was applied, but I was really impressed by how the nurse provided detailed care!

    2023.07.294
  • Rating 5.0 out of 5
    Visit verifiedSojung Dental Clinic

    Comfortable teeth whitening at home

    I was worried since it was my first time trying whitening, but after the consultation, I decided to go for it right away! I'm very satisfied~~ I'll definitely come back for another session~~~

    2021.06.25
  • Rating 5.0 out of 5
    Unverified강남미라인치과의원

    I was recommended to Dr. Yoo Il-jun and went in for a whitening treatment!! The consultation was so kind and thorough, and all the nurses were incredibly friendly too. I left feeling really good about the whole experience!! Now I understand why so many people go there. The clinic is also kept very clean and well-maintained!!

    2026.10.28
  • Rating 5.0 out of 5
    Unverified365드림치과병원

    Because my teeth looked yellowish and I wanted to brighten them, I had a teeth-whitening treatment at a dental clinic. First, they checked the condition of my tooth surfaces and gums to make sure it was safe to proceed with the whitening. Before the treatment, they checked my current tooth color and prepared by protecting my gums so the whitening agent wouldn’t come into contact with them. They then applied the whitening agent to the surface of my teeth and carried out the treatment as instructed. During the procedure, they checked to see whether my teeth felt sensitive or my gums felt irritated. After the whitening was completed, they cleaned off any remaining product from the tooth surfaces and checked that my gums hadn’t become irritated. Finally, they explained that I might experience temporary sensitivity after the treatment and advised me to avoid foods and drinks that stain easily for a while and to keep up my oral hygiene.

    2026.10.15
  • Rating 5.0 out of 5
    Unverified서울오늘치과의원

    A coworker recommended Seoul Today Dental Clinic because they’re good at teeth whitening, so I decided to visit. I’d been self-conscious because my teeth usually looked yellowish, but the consultation was kind and they explained the treatment process in detail, so I felt comfortable going through with it. The procedure was more comfortable than I expected, and I’m satisfied because my teeth look noticeably brighter afterward. The clinic was clean, and the staff were friendly too. I’d recommend it to anyone considering teeth whitening.

    2026.10.12
  • Rating 5.0 out of 5
    Unverified바른본치과의원

    I love coffee and used to drink five or more cups a day, so my teeth had turned yellow. They bothered me and caught my eye every time I brushed my teeth, so I got one-day teeth whitening at Bareunbon Dental Clinic. My teeth became noticeably brighter in a short time, and I’m happy with the results.

    2026.10.11
  • Rating 5.0 out of 5
    Unverified대학치과의원

    Honestly, I had no expectations at all before the treatment, but my teeth look dramatically whiter afterward, so I’m really satisfied. They say it’s best to have the treatment every six months, so I’ll see how things go and visit again. The value for money is really great, and the results are so noticeable that I’m extremely satisfied. Thank you, haha. The medical staff were also so kind!

    2026.09.21

Ongoing Procedures

5 frequently asked questions

  • Is it sufficient to receive teeth whitening just once? Typically, if I avoid alcohol, cigarettes, and coffee, how many sessions would I need?

    Hello, this is Rien Dental Clinic, accompanying your bright smile at every moment. ^^ The number of treatments may vary depending on the tooth color. Typically, one to three sessions are conducted in a day, and it is recommended to start treatment after a more accurate diagnosis. If you apply for a consultation via CashDoc, we will assist you with a prompt consultation at the hospital. Please apply at the bottom of the hospital event detail page! Thank you. ^^

  • I need orthodontic treatment.

    Hello. ^^ This is New En Dental Clinic. ^^ New En Dental Clinic, renowned for teeth whitening, also offers orthodontic treatments. ^^ Please leave your name and contact information, and we will assist you promptly. If you request a consultation through CashDoc, our hospital will provide you with quick assistance. Please apply at the bottom of the hospital event detail page! Thank you. ^^

  • How long does the light treatment during whitening therapy last?

    Hello :) The light treatment is conducted in three sessions, each lasting 15 minutes. The One-Day Teeth Whitening requires a minimum of 1 to 1.5 hours from preparation to completion. If you apply for a consultation through CashDoc, our hospital will assist you promptly. Please apply at the bottom of the hospital event detail page! Wishing you a great day today!

Treatment information does not replace medical diagnosis · prescription · treatment.
The procedure information · average price · reviews on this page are reference materials to help user exploration. The actual availability · suitability · detailed price must be determined after consultation with medical professionals. The average price is updated based on hospital procedure prices registered in Cashdoc.