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
UnverifiedCheongsong Dental Clinic
I went there because I was interested in whitening. Thank you for informing me about dental care.
2025.07.26
Rating 5.0 out of 5
UnverifiedNewen Dental Clinic
The cost of teeth whitening treatment felt overwhelming, but the prices ended up being cheaper than I expected, so I decided to consult.
2025.06.04
Rating 5.0 out of 5
UnverifiedLien Dental Clinic
I went to Rienjang Dental because of the good reviews, and the teeth whitening was great.
2025.04.12
Rating 5.0 out of 5
UnverifiedBaekse Teunton Plant Dental Clinic
I visited for teeth whitening and they explained everything in detail.
2025.01.30
Rating 5.0 out of 5
UnverifiedMilunamu Dental Clinic
I came in for teeth whitening treatment, and the doctor explains everything very well.
2024.01.01
Rating 5.0 out of 5
UnverifiedRev Dental Clinic
I was worried that my teeth looked yellow, but after getting teeth whitening, I feel like my smile looks much brighter and I’m really happy about it...
2025.11.131
Rating 5.0 out of 5
UnverifiedHanmi Dental Clinic
I wanted to get teeth whitening, so I went for a consultation. They did a great job.
2024.03.12
Rating 5.0 out of 5
UnverifiedSuseoul Dental Clinic
I was very interested in teeth whitening and had a consultation, and the staff were kind and the prices were reasonable.
2024.05.09
Rating 5.0 out of 5
UnverifiedGwak Dental Clinic
I had a consultation for teeth whitening, and the doctor was kind and attentive.
2025.10.21
Rating 5.0 out of 5
UnverifiedMisorang Dental Clinic
I visited for teeth plaque removal and whitening, and I appreciate the detailed explanation and kindness.
2025.11.17
Rating 5.0 out of 5
UnverifiedRev Dental Clinic
I received teeth whitening treatment, thank you for the thorough care during the procedure.
2025.10.07
Rating 5.0 out of 5
UnverifiedSeoul Hi-An Dental Clinic
I was interested in teeth whitening and had a consultation, they did a great job.
2024.02.18
Rating 5.0 out of 5
UnverifiedKim Gwanghwa Dental Clinic
I had teeth whitening treatment and it turned out white. The doctor is kind, thorough, and provides detailed care. I recommend this clinic.
2024.10.12
Rating 5.0 out of 5
UnverifiedKim Joo-sik Dental Clinic
This is a great dental clinic for teeth whitening in Hyunjeo-dong. I recommend it!
2024.07.17
Rating 5.0 out of 5
UnverifiedRev Dental Clinic
I got teeth whitening done, but after it was finished, I noticed some plaque was still on my teeth. I think they need to be a bit more thorough.
2026.04.241
Rating 5.0 out of 5
UnverifiedRev Dental Clinic
I got teeth whitening done. I had it done twice with Beautis? and my score went from 15.4 down to A1.
2026.04.242
Rating 5.0 out of 5
UnverifiedYoon Dental Clinic
I had a consultation for teeth whitening. They were very attentive and did a great job.
2025.10.22
Rating 5.0 out of 5
UnverifiedSeoul Clear Dental Orthodontics Clinic
I'm considering tooth whitening treatment, and the doctor is kind and explains everything in detail.
2024.01.26
Rating 5.0 out of 5
UnverifiedSeoul Es Dental Clinic
I had a consultation for teeth whitening. I was referred by a friend, so they were a bit more friendly and the quote was good.
2025.12.15
Rating 5.0 out of 5
UnverifiedSamsung Seoul Dental Clinic
I had teeth whitening done at the dentist and I felt great because my teeth turned white.
2024.02.04

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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