When Should You Come Back After a Procedure?

TL;DR: A follow-up visit serves one of three different purposes, and the timing depends on which one applies. A safety check runs on hours, not weeks, and should happen within 72 hours if something feels wrong. A results check for injectables typically lands around the two-week mark. A next-session check comes later, once an effect has started to fade. If you won't be in Seoul in two weeks, we plan the results check around that gap before you leave.

When a patient asks us when they should come back, we ask what they're checking for first. Safety, results, and planning the next session are three separate questions, and each one has its own clock.

Three Different Clocks, Not One

We hear "when should I come back" as three questions wearing one sentence. Whether the concern is an early complication, whether the treatment worked, or when to schedule the next round, each points to a different day on the calendar. Treating them as a single follow-up date is what leads patients to either come back too early, before an injectable has finished settling, or too late, after a window for a simple touch-up has closed.

A Safety Check Runs on Hours, Not Weeks

Swelling and mild warmth after an injection or an energy-based lifting treatment usually settle within a few days on their own. That is expected and not a reason to call. What is not expected: pain that keeps getting worse, redness paired with warmth, a change in skin color, or any discharge from an injection site. If any of those appear, we tell patients not to wait for a scheduled visit. We ask to see the area within 72 hours of the procedure, because that window is when a developing problem is still easiest to treat, and a phone description of redness or swelling is a poor substitute for a clinician looking at the skin directly.

Why Results Are Checked Around Two Weeks

Botulinum toxin injections don't take effect immediately. The result builds over the days after injection and reaches its final state around two weeks out, which is why clinical protocols use that point as the first real assessment rather than day one or day three. The phase 3 trial protocol for DaxibotulinumtoxinA, sponsored by Revance Therapeutics, schedules its first post-treatment follow-up visit at Week 2 for exactly this reason: it is the earliest point at which the treated lines have actually reached where they're going to land.

That same two-week mark is also when a touch-up decision gets made, and the numbers behind it are worth knowing. Konstantin Frank and coauthors, writing in Aesthetic Surgery Journal Open Forum in 2025, followed 20 patients who received a comprehensive upper-face botulinum toxin treatment and evaluated them at baseline, Week 2, and Week 16. Five of the 20 patients, 25 percent, received a touch-up injection at the Week 2 visit. By Week 16, improvement was still present in 70 to 80 percent of participants depending on which area was measured. The study involved a single treatment center and a small group of patients, so the exact percentages shouldn't be read as a universal rate. What the numbers do explain is why a two-week check is standard practice rather than an arbitrary date: it's early enough to catch an under-treated area while a small adjustment still makes sense, and late enough that the injection has actually finished working.

Treatments built around stimulating the skin's own collagen response sit on a longer timeline than injectables. Judging one of those by how it looks at two weeks and adding another session because the change still feels subtle is how a treatment plan ends up overcorrected. We assess those results later, once the skin has had time to actually remodel.

If You Won't Be in Seoul in Two Weeks

Most of the patients we see are not staying in Korea long enough for an in-person visit at the two-week mark, and we plan around that from the start rather than treating it as an exception. Our Gangnam location sits inside the UH FLAT SIGNATURE Gangnam hotel building, so during a patient's stay we can review recovery without them needing to travel between a hotel and a separate clinic address. Japanese, Chinese, and English-speaking staff are on site, so a question after a patient has flown home doesn't stall on a language barrier once the in-person visit is no longer an option.

Before a procedure, we settle three things with every short-stay patient. First, whether the product, dose, and injection layer used are recorded in a way that can be pulled up later, not just noted informally. Second, what the actual channel is for sending a follow-up photo after they've returned home, and who reviews it. Third, at what point a return trip for a touch-up would make sense if one turns out to be needed. Patients who confirm these before treatment, rather than after landing home, tend to have a much easier time closing the loop. Our guide on what to confirm about safety before a Korea procedure covers the related questions worth asking before you book.

FAQ

Do I need to come in at two weeks if nothing feels wrong?

It isn't mandatory. That said, if this is your first time receiving a particular treatment, or the dose was set differently than before, a two-week check gives us a clearer basis for planning the next session, even when everything looks fine to you.

Why do you take new photos at a follow-up instead of just asking how it looks?

Comparing photos taken under the same lighting and angle as the originals is far more reliable than a verbal comparison. Memory tends to either overstate or understate a change, especially once a few weeks have passed.

Does a touch-up cost extra?

It depends on the treatment. Whether a touch-up is included and for how long after the original session should be confirmed during the consultation, ideally in writing, before the procedure itself.

If something goes wrong after I've flown home, can I see a local doctor there instead?

You can, but a local clinician will have a hard time making a judgment without knowing exactly what product and dose were used. Take your treatment record with you, and contact the clinic that performed the procedure first so they can share the relevant details with whoever sees you next.