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
UnverifiedWhite Dental Clinic
I consulted about teeth whitening. The doctor is very kind and caring.
2025.10.30
Rating 5.0 out of 5
UnverifiedSky Dental Clinic
I visited to get a consultation for teeth whitening and they were really kind and explained everything well.
2024.03.06
Rating 5.0 out of 5
UnverifiedBright Smile Dental Clinic
I visited for a teeth whitening consultation and listened closely to the detailed explanation before making my decision.
2025.08.13
Rating 5.0 out of 5
UnverifiedYebon Dental Clinic
I’ve been going for teeth whitening treatments. Please take care of me without any pain..
2024.01.16
Rating 5.0 out of 5
UnverifiedLumiere Dental Orthodontics Clinic
I had a consultation for teeth whitening and went straight into treatment. I decided to go back one more time.
2026.01.20
Rating 5.0 out of 5
UnverifiedLime Dental Clinic
I was really interested in teeth whitening, so I had a consultation, liked it, and decided to get it done on Friday.
2024.04.10
Rating 5.0 out of 5
UnverifiedNamwon Simple Implant Dental Clinic
I went for a whitening consultation because my teeth were discolored. Thank you for the thorough information.
2025.08.01
Rating 5.0 out of 5
UnverifiedBoston Smile Dental Clinic
I've been really interested in teeth whitening, so I had a consultation with the doctor and I liked it. I'm starting next week.
2024.04.23
Rating 2.0 out of 5
UnverifiedDier Dental Clinic
I had six teeth-whitening sessions—three sessions each over two visits—but there wasn’t much of an effect.
2026.08.23
Rating 5.0 out of 5
UnverifiedDental Aesthetic Dental Clinic
I went for a consultation because of teeth whitening. I was referred by a friend and they really did a great job.
2025.11.24
Rating 5.0 out of 5
UnverifiedYeoju Hundred Years Dental Clinic
I had cavity treatment and my teeth were yellow, so I came for a teeth whitening consultation.
2025.10.10
Rating 5.0 out of 5
UnverifiedSeoul High Dental Clinic
I visited for teeth whitening to get white teeth. It was clean and neat, and I'm very satisfied with the results.
2024.03.122
Rating 5.0 out of 5
UnverifiedBoston Dental Clinic
I'm considering teeth whitening treatment, and the doctor was kind and provided a detailed consultation.
2024.02.14
Rating 5.0 out of 5
UnverifiedOur Dental Clinic
I just had teeth whitening done. The staff were friendly and explained everything well.
2025.10.16
Rating 5.0 out of 5
UnverifiedStory Dental Clinic
I got teeth whitening at the dentist, and my teeth feel like they've come back to life, which made me really happy.
2024.02.04
Rating 5.0 out of 5
UnverifiedSeoul Mint Dental Clinic
I had whitening treatment because of discoloration on my teeth. I'm satisfied with the thorough care from the doctor.
2025.12.16
Rating 5.0 out of 5
UnverifiedSmart Implant Dental Clinic
The teeth whitening worked great! My teeth have turned white, and the staff was friendly and provided good care.
2025.02.03
Rating 5.0 out of 5
UnverifiedPohmi Dental Clinic
I came in for a consultation about teeth whitening. They were very thorough and attentive during the consultation.
2025.10.10
Rating 5.0 out of 5
UnverifiedRev Dental Clinic
I was upset that my teeth looked yellow, but after getting teeth whitening, I feel like my impression looks much brighter and I'm happy with it.
2025.11.12
Rating 5.0 out of 5
UnverifiedSunlight Dental Clinic
I came for a consultation about teeth whitening. The explanations were very good, so I trust them.
2025.10.16

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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

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