Excellent 4.8/ 5

Kiyss Oral Health Probiotics


  • Calmer, Healthier Gums
  • Fresh Breath That Lasts
  • Less Red in the Sink
  • Confidence to Get Close
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Dr. Renee Castellano, Periodontist
Dr. Renee Castellano, Periodontist

So many patients keep bleeding at the sink even though they brush, floss, and get their cleanings on schedule. A cleaning scrapes the surface, it never changes which bacteria repopulate underneath afterward. That balance is what actually decides whether gums stay calm, and it's the one thing no toothbrush can reach. I tell people to support the good bacteria at the gumline and give it a full cycle before judging it.

How Kiyss Works

Follow these simple steps to get started

The Trigger

The Trigger

It was never how hard you were brushing. Under your gumline lives a colony of bacteria, and when the harmful strains — mainly P. gingivalis — crowd out the protective ones, your gums stay inflamed. That inflammation is the swelling, the tenderness, and the pink in the sink, long before a dentist ever calls it anything.

Why Others Miss It

Why Others Miss It

Most oral care chases the surface: brush longer, floss more, swish the mouthwash. It scrubs plaque off and masks the smell for twenty minutes, but it can't change which bacteria repopulate underneath. Mouthwash makes it worse — it nukes the whole ecosystem, protective strains included, and the harmful ones grow back first.

How KIYSS Helps

How KIYSS Helps

We deliver three protective strains as a once-daily lozenge — the gentle, living amount your gumline can actually use — so that balance is reseeded every day. Calmer gums, fresher breath, and less bleeding, one consistent cycle at a time.

The Trigger

The Trigger

It was never how hard you were brushing. Under your gumline lives a colony of bacteria, and when the harmful strains — mainly P. gingivalis — crowd out the protective ones, your gums stay inflamed. That inflammation is the swelling, the tenderness, and the pink in the sink, long before a dentist ever calls it anything.

Why Others Miss It

Why Others Miss It

Most oral care chases the surface: brush longer, floss more, swish the mouthwash. It scrubs plaque off and masks the smell for twenty minutes, but it can't change which bacteria repopulate underneath. Mouthwash makes it worse — it nukes the whole ecosystem, protective strains included, and the harmful ones grow back first.

How KIYSS Helps

How KIYSS Helps

We deliver three protective strains as a once-daily lozenge — the gentle, living amount your gumline can actually use — so that balance is reseeded every day. Calmer gums, fresher breath, and less bleeding, one consistent cycle at a time.

Your Kiyss Journey

First 30 Days

Your first real win

The pink starts to fade. Your mouth feels fresher for longer and your gums look calmer, less puffy, less tender when you brush. This is the first clear proof the balance is finally shifting instead of just being scrubbed, and your reason to keep going.

Month 3

The shift others notice

A bigger, different payoff: fresh breath that actually holds through the day, and you catch yourself laughing and leaning in without the old flinch, the people close to you feel it before you do. This lands right as your 3-month bundle runs out.

Month 6

Fully settled

The protective strains are holding their territory on their own: gums you don't think about, breath you don't worry about. This is the full result, the destination the biggest bundle carries you to.

Month 12

Compounding bonus

Balance is the floor, not the ceiling. The good bacteria stay dominant only while you keep reseeding them, stop, and the harmful strains slowly creep back, and the pink has a way of returning. Stay on, and the calm keeps deepening into a mouth that's simply how you are now, which is exactly why most people lock it in.

  • 5 stars: 1027 (84%)
  • 4 stars: 128 (11%)
  • 3 stars: 20 (2%)
  • 2 stars: 20 (2%)
  • 1 star: 23 (2%)
N
Noah B.
Definitely repurchasing

Really happy with this supplement. It's become a seamless part of my nightly routine right before bed.

H
Harper P.
Impressive results

Clean ingredients and effective. Noticeably less plaque buildup during my last checkup.

M
Mason U.
A total game changer for my confidence!

I've struggled with chronic bad breath for years and tried everything under the sun. Within just two weeks of using Kiyss, my confidence is completely restored. I can finally talk to people up close without second-guessing myself!

A
Alexander S.
Noticeable difference in my gums

My gums feel healthier and less sensitive. Glad I gave these a try.

C
Charlotte T.
A total game changer for my confidence!

I was skeptical because nothing ever worked for my gum sensitivity, but this completely transformed my oral health. My dentist was genuinely shocked at my last visit.

T
Theodore O.
I can finally talk close without anxiety

I was skeptical because nothing ever worked for my gum sensitivity, but this completely transformed my oral health. My dentist was genuinely shocked at my last visit.

E
Emily B.
Impressive results

Simple, effective, and tastes good. Not much else to ask for from an oral probiotic.

G
Grace Y.
Finally something that actually works!

Absolute holy grail product. My mouth feels as clean at the end of a long workday as it does right after brushing in the morning. Worth every single penny.

C
Chloe U.
A total game changer for my confidence!

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

V
Victoria H.
Impressive results

Simple, effective, and tastes good. Not much else to ask for from an oral probiotic.

E
Ella P.
Arrived late

Been using this for over a month and honestly haven't noticed any real difference in my breath or teeth. Might work for others, but not for me.

C
Chloe L.
So fresh

I've been using these for a few weeks now and my mouth feels noticeably cleaner throughout the day. The mint flavor is subtle and pleasant.

E
Evelyn Q.
A total game changer for my confidence!

I've struggled with chronic bad breath for years and tried everything under the sun. Within just two weeks of using Kiyss, my confidence is completely restored. I can finally talk to people up close without second-guessing myself!

I
Isabella W.
I'm crying tears of joy

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

O
Oliver L.
A total game changer for my confidence!

Absolute holy grail product. My mouth feels as clean at the end of a long workday as it does right after brushing in the morning. Worth every single penny.

A
Aiden F.
Super easy routine

My gums feel healthier and less sensitive. Glad I gave these a try.

L
Luna T.
Impressive results

Started taking these after my hygienist recommended oral probiotics. Easy to dissolve, tastes great, and definitely helps with morning breath.

J
Jackson R.
Impressive results

I've been using these for a few weeks now and my mouth feels noticeably cleaner throughout the day. The mint flavor is subtle and pleasant.

E
Ethan R.
Morning breath gone

Clean ingredients and effective. Noticeably less plaque buildup during my last checkup.

O
Olivia H.
Love these probiotics

Subtle mint flavor, dissolves smoothly, and keeps my breath fresh even after coffee and lunch.

J
Jack Q.
I'm crying tears of joy

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

C
Charlotte B.
Life changing for my breath

I was skeptical because nothing ever worked for my gum sensitivity, but this completely transformed my oral health. My dentist was genuinely shocked at my last visit.

T
Theodore S.
I'm crying tears of joy

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

D
Daniel W.
I'm crying tears of joy

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

R
Riley A.
Disappointed with delivery

The outer box arrived completely crushed and dented due to poor shipping carriers. Luckily the inner bottle wasn't broken.

J
Jack D.
Morning breath gone

My gums feel healthier and less sensitive. Glad I gave these a try.

E
Ethan N.
Finally something that actually works!

I've struggled with chronic bad breath for years and tried everything under the sun. Within just two weeks of using Kiyss, my confidence is completely restored. I can finally talk to people up close without second-guessing myself!

J
James M.
Saved my dental checkup!

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

R
Riley Q.
Best oral care discovery ever

This product literally gave me my smile and social life back. I used to carry mints and gum everywhere, but now I just take one lozenge and I'm good all day long. Thank you Kiyss!

V
Victoria K.
Great minty taste

My gums feel healthier and less sensitive. Glad I gave these a try.

E
Ethan U.
Definitely repurchasing

Clean ingredients and effective. Noticeably less plaque buildup during my last checkup.

A
Aria X.
Finally something that actually works!

I've struggled with chronic bad breath for years and tried everything under the sun. Within just two weeks of using Kiyss, my confidence is completely restored. I can finally talk to people up close without second-guessing myself!

A
Amelia Q.
Finally something that actually works!

Absolute holy grail product. My mouth feels as clean at the end of a long workday as it does right after brushing in the morning. Worth every single penny.

Frequently Asked Questions

Is this the same as the probiotics my dentist sells? +

It's the same family of protective strains — BLIS K12 and M18 are the clinically studied ones behind most credible oral probiotics. KIYSS foregrounds K12, M18, and L. reuteri together, the three with published data on gums, plaque, and breath, at a CFU count we print on the label instead of hiding in a blend.

Will it feel like just another mint? +

No. A mint masks smell for twenty minutes and does nothing to the bacteria causing it. KIYSS reseeds protective strains that crowd the harmful ones out over time, so the fresh breath comes from the balance shifting — not from covering it up.

I've tried everything for my gums and nothing stuck. Why is this different? +

Because everything you tried was mechanical or masking — brushing, flossing, rinsing all remove or cover bacteria. None of them change which bacteria colonize under the gumline, which is what actually drives the bleeding. KIYSS is built to do that one different job.

Can I take it with my current medications? +

KIYSS is a sugar-free, non-GMO daily lozenge, but anything you add to your routine should be reviewed with your dentist or doctor first — especially with an existing condition or ongoing treatment.

Why haven't I heard about oral probiotics from my dentist? +

Dental training centers on cleaning and repair — scraping, filling, and treating what's already visible. The microbiome side is newer and moves slower into the chair, which is exactly why so many people who "do everything right" are still surprised the balance was the missing piece.

Can I take it alongside dental treatment or a gum-disease diagnosis? +

KIYSS is meant to support healthy gums, not to replace professional care. If you have a diagnosis, recession, or loose teeth, keep seeing your dentist and treat KIYSS as daily support alongside it, after checking with them.

What if it doesn't work for me? +

Then you send it back within 90 days for a full refund. The guarantee exists so putting the idea to the test costs you nothing but the time.