Key summary: The formula that 600 shots of Ultherapy work twice as well as 300 shots does not hold. The shot count only means how many times ultrasound stimulation of the same strength is divided across the face, so especially for a single session it is more reasonable to first decide at what depth the sagging began and where to concentrate or spare energy, and only then reach the shot count as a conclusion.
Why a single session makes people want more shots
If you sum up in one sentence what people torn between 300 and 600 shots of Ultherapy are thinking, it is that they want to get it done without regrets since they are doing it once. Ultherapy is a lifting treatment that takes money and time, so if you plan to finish with a single Ultherapy session, wanting to receive plenty is natural.
In the clinic, though, this very feeling often clouds the decision. So this article lays out two criteria to check first when weighing the difference between 300 and 600 shots.
Twice the shots does not mean twice the result
Many people who choose 600 shots expect that since it is twice 300 shots, the effect will be twice as good. But shot count and effect are not directly proportional in that way.
Ultherapy is a treatment that concentrates ultrasound energy at a set depth in the skin to deliver heat stimulation. The shot count only indicates how many times that stimulation is sent across the face; the strength of each shot does not double. So it is hard to say that sending 600 shots to the same face gives a result twice as good as 300 shots.
Many people also look at the price per shot. Since the price of each shot falls as the count rises, 600 shots can feel like a better deal, but shots your face does not need are hard to call a gain however low the unit price. It is like buying in advance energy that need not be used.
What is easy to miss when increasing the shot count
If the shot count is raised on a face without much sagging simply because it is a single session, energy may reach places that do not need it. People with little cheek fat may see the volume they should keep affected, and the risk of side effects such as swelling or burns can also rise.
The opposite case exists too. For someone whose sagging has progressed across the whole face, dividing energy with only 300 shots may be tight for the area involved. In the end, choosing between 300 and 600 shots of Ultherapy is not about how to avoid regret but about how far the area your face needs extends.
That is why, the more someone wants a single Ultherapy session, the more we emphasize precision over quantity. If there is only one chance, where that one session's energy is used matters even more.
First criterion: the depth where sagging began
Even if it looks like the same sagging on the surface, the treatment direction needed differs depending on which layer under the skin is sagging most. Ultherapy can treat layers separately, from the deep fascial layer to shallower layers, by switching tips with different depths.
Even with the same 300 shots, focusing on the deep layer versus also treating shallower layers makes it effectively a different treatment. This is why you should first check at what depth your sagging started before asking about the shot count.
Second criterion: where to place energy and where to spare it
Next is how much energy to place where within the face. The approach is to concentrate on areas where sagging gathers, such as the jawline and deep cheeks, protect areas whose volume should be kept, such as the front of the cheeks, and adjust intensity on the forehead and chin tip, which are close to bone.
Only after this placement and distribution is finished can we judge whether this face is fine with 300 shots or needs 600. For someone whose sagging is concentrated along the jawline, focusing 300 shots there may be better, while for someone whose area extends from the face down to under the chin, 600 shots can be a reasonable choice.
The same question gets different answers for different people because faces differ, not numbers. So we place the shot count not as the first question of the consultation but as the final conclusion. If a consultation starts by fixing the shot count and fits everything else around it, it is worth asking why at least once.
How O.N Clinic proceeds, and recovery
At O.N Clinic we measure the skin condition before treatment with several methods, including an AI skin analyzer, and during treatment we match the depth while checking the layers inside the skin directly on the ultrasound screen of Ultherapy PRIME. Change tends to rise slowly over time rather than right after treatment, so we follow the progress together after treatment as well.
Results vary with skin condition and the pace of aging, so it is hard to promise the same change with any shot count. Instead, we believe we should be able to explain clearly how many shots this face needs and why. Knowing in advance that swelling, redness or temporary tenderness can occur after treatment also makes scheduling easier.
It helps to remember the principle that a single Ultherapy session calls for precision rather than more. The shot count is a number decided after checking the depth of your sagging and where energy should go, and simply keeping that order makes the dilemma between 300 and 600 shots much lighter.
Frequently asked questions
If I am only having it once, isn't it better to get plenty of shots?
The effect does not grow in proportion to the increase in shots, and energy reaching places that do not need it can actually become a burden. We recommend checking the extent and depth of sagging first and deciding on only as many shots as needed.
My cheeks are thin. Will Ultherapy make them look more hollow?
If too much energy goes into areas whose volume should be kept, hollowness can look more pronounced. Before treatment, it is necessary to check the amount of cheek fat and separate the areas where energy will be used from those where it will be spared.
If there is little difference right after treatment, did it fail?
Change after lifting tends to appear gradually over time, so it is too early to judge by the look right after treatment. It is good to watch the progress over several weeks to several months.
Visiting and consultation
O.N Clinic is near Gangnam Station, so it is fairly easy to reach by subway.
If you are deciding between 300 and 600 shots of Ultherapy, noting the areas that concern you most and your previous lifting experience will make the consultation on sagging depth and shot count easier. If you have any questions, feel free to chat with us now.
Author: Dr. Oh Seung-min (Chief Director of O.N Clinic, graduate of Seoul National University College of Medicine, Chair of the Scientific Committee of the Korean Society for Laser, Skin and Hair). See the full profile on the medical team page. First published 2026-10-29, last reviewed 2026-11-10
This article is for general information only, and the appropriate treatment and outcome may differ depending on each person's condition.