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. ^^

Yes, during teeth whitening, how long is the light applied?

Hello~ ^^ Dear Customer, the tooth whitening light treatment lasts for 15 minutes per session.

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!

Hello, is the cost for one session of teeth whitening?

Hello~ ^^ Dear Customer, this is the cost for three sessions of tooth whitening.

Teeth Whitening effects, reviews, and prices (2026)

BEFORE & AFTER

Teeth Whitening Before & After

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

Before
After
Rating 5.0 out of 5
2023.05.14
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
After
Rating 5.0 out of 5
2023.02.26
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
After
Rating 5.0 out of 5
2023.12.3018
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.

476 verified reviews

Rating 5.0 out of 5
UnverifiedCentral Dental Clinic
I had a whitening consultation, and they were kind and the prices are good.
2024.02.23
Rating 5.0 out of 5
UnverifiedOrun Dental Clinic
You can achieve a clean look with teeth whitening alone.
2024.02.16
Rating 5.0 out of 5
UnverifiedYonsei Mun Dental Clinic
This is a place that does teeth whitening really well and takes care of everything neatly.
2024.02.08
Rating 5.0 out of 5
UnverifiedChoi & Ahn Dental Clinic
I went for a consultation for teeth whitening and the price was really good.
2024.04.19
Rating 5.0 out of 5
UnverifiedWhite Dental Clinic
I was really satisfied with the detailed consultation for teeth whitening.
2024.04.11
Rating 5.0 out of 5
UnverifiedJungyeon Dental Clinic
I came in for teeth whitening, and the price was reasonable.
2024.04.22
Rating 5.0 out of 5
UnverifiedSmart Implant Dental Clinic
After getting my teeth whitened, I feel more confident when I smile
2025.01.08
Rating 5.0 out of 5
UnverifiedGood Sense Dental Clinic
I visited for teeth whitening and it went well without any side effects.
2025.01.05
Rating 5.0 out of 5
UnverifiedGangbyeon White Dental Clinic
I visited because they’re known for teeth whitening, and sure enough 👍
2025.09.19
Rating 5.0 out of 5
UnverifiedSeoul Seyeon Dental Clinic
I had teeth whitening done at the dentist, and my teeth turned white and shiny. The dentist was an expert in teeth whitening, and the nurse was very kind and offered great advice.
2024.02.08
Rating 5.0 out of 5
UnverifiedYonsei Dagam Dental Clinic
Teeth whitening by a professional seems safe and effective. It's nice to have white teeth. I should get it done regularly.
2025.10.111
Rating 5.0 out of 5
Unverified365 Seoul Chaeum Dental Clinic, Bupyeong
The teeth whitening effect is great. My yellow teeth have become white. I need to take good care of them to maintain the results.
2025.10.061
Rating 5.0 out of 5
UnverifiedNaver Dental Clinic
My teeth weren't bright enough, so I got a whitening treatment.
2026.01.06
Rating 5.0 out of 5
UnverifiedClear Smile Dental Clinic
I had a teeth whitening consultation, and they explained everything in detail, which I appreciated.
2024.04.17
Rating 5.0 out of 5
UnverifiedSmart Implant Dental Clinic
I was debating getting my teeth whitened, but after doing it, they look brighter.
2025.01.08
Rating 5.0 out of 5
UnverifiedGangdong Dental Clinic
I'm receiving whitening consultations and treatment for my painful tooth, and I'm satisfied.
2023.12.27
Rating 5.0 out of 5
UnverifiedSeoul Wise Dental Clinic
The teeth whitening was much more satisfying than I expected.
2024.01.30
Rating 5.0 out of 5
UnverifiedSmart Implant Dental Clinic
I was stressed out about my tooth discoloration, but I'm glad I got the whitening done.
2025.01.07
Rating 5.0 out of 5
UnverifiedLucid Dental Clinic
I kept postponing teeth whitening, but I'm glad I finally did it.
2025.01.24
Rating 5.0 out of 5
UnverifiedOrun Dental Clinic
I did teeth whitening and when I looked in the mirror, I looked bright and beautiful. The change in one tooth color has a cosmetic effect, haha.
2024.01.22

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Ongoing Procedures

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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. ^^
Transform Yellow Teeth into Shining White Teeth · Lien Dental Clinic · 2025-02-27
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. ^^
Bright White Smile, Whitening Specialist New En Dental! · Newen Dental Clinic · 2025-02-03
Yes, during teeth whitening, how long is the light applied?
Hello~ ^^ Dear Customer, the tooth whitening light treatment lasts for 15 minutes per session.
Transform Yellow Teeth into Shining White Teeth · Lien Dental Clinic · 2024-10-21
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!
Confidently Smile One-Day Teeth Whitening - 3 Sessions · Good Sense Dental Clinic · 2024-10-17
Hello, is the cost for one session of teeth whitening?
Hello~ ^^ Dear Customer, this is the cost for three sessions of tooth whitening.
Transform Yellow Teeth into Shining White Teeth · Lien Dental Clinic · 2024-10-17

Teeth Whitening effects, reviews, and prices

Teeth Whitening Before & After

476 verified reviews

Ongoing Procedures

5 frequently asked questions

Related Treatments