The Movement Check
We watch your face frown, raise, and rest, then map which muscles are creating the lines and how strongly each one pulls.



The two vertical lines between your brows have started doing the talking. People ask if you are annoyed on days when you feel perfectly fine. Those lines get more literal over time. What began as a crease that appeared only when you concentrated slowly etches itself into the skin, until it stays put whether your face is moving or not.
Korean Botox answers that specific problem. At Kucumber Skin Lounge in Bellevue, we use LETYBO as part of our K-TOX menu to relax the muscles pulling those lines into place.
LETYBO is made by Hugel, a South Korean biopharmaceutical company, and it has been one of the leading neurotoxins in Korea for years. The FDA approved it in February 2024 for the temporary improvement of moderate to severe glabellar lines, the frown lines between your brows.
It works the way other botulinum toxin type A products do, blocking the nerve signal that tells those small muscles to contract. Less contraction means the line stops being reinforced every time you concentrate.
The appointment is short. Five small injections into the muscles that create the 11s, and most guests are out of our Main Street office in under 20 minutes.
What our Bellevue guests notice:
One detail worth knowing: LETYBO units are specific to its own assay and are not interchangeable with Botox, Dysport, or Xeomin units. If you are switching over from another product, we recalculate rather than copying your old number across.
We also follow the labeled spacing and do not retreat more often than every three months. That interval protects your results and lowers the chance of your body building resistance over years of treatment.
If your concerns extend past the frown lines, we will talk through which products fit which areas. Our injectors are direct about what LETYBO is approved to treat and where a different neuromodulator makes more sense.

This suits healthy adults bothered by moderate to severe frown lines who want a straightforward, low commitment treatment.
You are likely a good fit if:
We postpone for pregnancy and nursing, active infection at the injection site, and certain neuromuscular conditions. Tell us about any prior toxin treatment, including when and how much, so we can time yours correctly.

Neurotoxin results come down to placement and dosing, not the brand on the vial. Our founders Nadya Kozlova and Shay Sim have spent more than two decades in non-surgical aesthetics, and they built Kucumber around exactly that judgment.
We are the only PNW med spa that trains its aestheticians internally, so the protocol you get in Bellevue matches what our Seattle and Bellingham teams follow.
Our injectors also dose conservatively on first visits. A frozen brow is easy to create and impossible to reverse quickly, so we would rather see you at two weeks and add a small amount than hand you a face that will not move for three months.
Guests treating on a regular schedule join The Kult for better pricing across injectables and monthly facials.

How It Works
We watch your face frown, raise, and rest, then map which muscles are creating the lines and how strongly each one pulls.
We confirm LETYBO is the right choice for your concern and convert your dose properly if you are coming from another toxin.
We cleanse the area, mark your injection points, and apply ice if you want it, though most guests skip numbing entirely.
Five small injections go into the corrugator and procerus muscles, and the whole sequence takes a few minutes.
You leave with aftercare, and we see you again once the result has fully settled so we can assess balance and adjust if needed.
Frown lines get harder to soften the longer they stay etched, and a treatment you book today is showing results before next weekend. Your consultation costs nothing, and it takes 20 minutes to find out what your face looks like without the 11s doing the talking. Call our Bellevue office at (425) 429-3694 or book online, and let us give your resting face back.

No. Botox is Allergan's product, and what people call Korean Botox usually means LETYBO, made by Hugel in South Korea. Both are botulinum toxin type A and both relax the same muscles, but they are separate FDA-approved products with their own dosing units. Our Bellevue injectors will explain the differences at your consultation.
Faster than you might expect from a first toxin appointment. Most people notice softening around day two or three, with full results settling by one to two weeks. If you are treating ahead of an event, book at least two weeks out so you see the finished result rather than the halfway point.
About three to four months for most people, though metabolism, dose, and how strongly you use those muscles all shift the timeline. The label specifies at least three months between treatments, and we hold to that. Guests who treat consistently often find their lines soften over time.
Very little. Five quick injections with a fine needle into a small area, and the whole sequence is over in a couple of minutes. Some guests take ice beforehand, most do not bother. Expect small red marks that fade within an hour and occasional light bruising.
Yes, and plenty of our Bellevue guests do. The important part is the dosing conversion, since LETYBO units are specific to its own assay and cannot be matched one to one against your previous product. Bring your treatment history and we will calculate the right dose for you.
Pricing depends on your dose, which depends on muscle strength and treatment history rather than a flat number. We quote your exact cost at the consultation before anything is scheduled. Ask about current specials and The Kult membership, since regular treatment every three to four months adds up over a year.