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
Unverified365 Dream Dental Hospital
As others have mentioned, the hospital is clean and nice.
2024.10.013
Rating 5.0 out of 5
UnverifiedSuchi Dental Clinic
I went for a teeth whitening consultation. They provided a kind and thorough consultation. I was really pleased with it. - Younghee
2024.07.16
Rating 5.0 out of 5
UnverifiedBundang Dental Clinic
I had a consultation for teeth whitening. It was something I had been worried about for a while, but they took care of it perfectly.
2025.12.10
Rating 5.0 out of 5
UnverifiedMyeongin Dental Clinic
I had a consultation and treatment for teeth whitening. They really did a thorough job and made my teeth so clean.
2026.01.15
Rating 5.0 out of 5
UnverifiedNew York Dental Clinic
I consulted about teeth whitening. Thank you for your kindness and thorough examination.
2025.10.20
Rating 5.0 out of 5
UnverifiedLee Jong-hyun Dental Clinic
I visited for teeth whitening because I wanted white teeth. The doctor was very thorough, and my teeth got better. I recommend it.
2025.03.20
Rating 5.0 out of 5
UnverifiedJihang Open Dental Clinic
The teeth whitening made my teeth so white! I was really stressed about my yellow teeth. I recommend it!
2024.04.02
Rating 5.0 out of 5
UnverifiedRev Dental Clinic
It's a really large dental clinic. The facilities are great and the staff is friendly. I got teeth whitening done and I'm satisfied as it worked well without any sensitivity.
2025.10.202
Rating 5.0 out of 5
Unverified365 Dream Dental Hospital
My teeth are really dull in color, so I came to get them whitened. I hope they turn out well, even if it takes some time.
2024.12.13
Rating 5.0 out of 5
UnverifiedStar Dental Clinic
My teeth were yellow, so I was self-conscious when I smiled and tried to hide it, but the whitening treatment was the best.
2024.03.18
Rating 5.0 out of 5
UnverifiedSinchang Dental Clinic
I had a teeth whitening procedure done. My teeth were usually not in good condition and had a yellowish color, but after the treatment, they became bright white. I recommend it!
2024.04.08
Rating 5.0 out of 5
UnverifiedHappy Dream Dental Clinic
I finally decided to get the teeth whitening I’d been thinking about since my twenties. It was a great result from tagging along with a friend.
2024.02.19
Rating 5.0 out of 5
UnverifiedLine Dental Clinic
I had teeth whitening at the dentist, and my teeth look so pretty now. The dentist was also very kind.
2024.02.10
Rating 5.0 out of 5
UnverifiedMisorang Dental Clinic
I had a consultation about teeth whitening. They were very thorough and attentive. I made an appointment and came in.
2025.10.24
Rating 5.0 out of 5
UnverifiedHappy Dream Dental Clinic
I had teeth whitening done. I used to feel self-conscious about smiling widely, but now I can smile freely showing my teeth. The doctor is very kind.
2024.04.15
Rating 5.0 out of 5
UnverifiedHarry Dental Clinic
I was really bothered by how yellow my teeth looked, so I had a consultation about teeth whitening. I hope they turn out nicely.
2024.02.14
Rating 5.0 out of 5
UnverifiedSeoul One Plant Dental Clinic
I went for teeth whitening and tartar management. After getting a thorough scaling, I feel refreshed and like I could fly!
2025.10.04
Rating 5.0 out of 5
Unverifiede-Good Dental Clinic
I was interested in teeth whitening, so I came in for a consultation. The doctor explained everything very thoroughly.
2025.07.23
Rating 5.0 out of 5
UnverifiedSpring Day Smile Dental Clinic
My teeth have become more stained, so I'm receiving whitening treatment. Please take care of me, doctor.
2026.01.22
Rating 5.0 out of 5
UnverifiedDong Suwon OK Dental Clinic
I had a whitening treatment done, and my teeth feel clean, fresh, and bright. I recommend it!
2024.07.02

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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