In short. Why both treatments are given as a plan rather than a single appointment, how the interval is decided, and what a maintenance schedule looks like over years.
Key points
- The two sound similar and are not the same.
- A course is a clinical plan with a stated number of sessions, an interval and a review point at which the response is assessed.
- A package is a prepaid quantity of treatment sold before anyone has seen how your skin responded to the first session.
The schedule is the part of a tightening plan that patients agree to without examining, and it decides what the treatment costs over time. Both options are given as a plan rather than a single appointment, and both assume you will come back. Understanding why is more useful than memorising a protocol.
Why a course rather than one treatment
A single session deposits a limited amount of controlled heat, and a limited amount of heat produces a limited collagen response. A course is how the total is built up while the tissue repairs between sessions. Radiofrequency is usually several short sessions spaced weeks apart; microfocused ultrasound is often one to three sessions at longer intervals. The two routes arrive at the same place by different means.
How the interval is decided
From biology rather than convenience. Tissue that has just been heated needs time to complete its repair before it is heated again, and treating an area before that repair has finished adds risk without adding effect. The interval is a clinical judgement about your skin and about how much energy was delivered, and it should be stated at the outset rather than improvised at the front desk.
A course is not a package
The two sound similar and are not the same. A course is a clinical plan with a stated number of sessions, an interval and a review point at which the response is assessed. A package is a prepaid quantity of treatment sold before anyone has seen how your skin responded to the first session. Ask which one is being offered, and what happens to the remaining sessions if the review says it is not working.
What maintenance looks like over years
The change fades, so keeping it means returning at intervals measured in months. How often is decided from how the result is holding rather than from a fixed schedule. Because both options age with your own tissue, the maintenance requirement is broadly the same for either, which is why the cost of an energy treatment is honestly understood as a recurring one. A plan presenting a single course as the end of the matter has not described year two.
What happens if you stop
The change fades over the months that follow, and the laxity returns towards where it was heading anyway. Nothing reverses abruptly, nothing is damaged by stopping, and no penalty attaches to it. You gradually return to the appearance you would have had without treatment. For some patients that is a fair outcome of a worthwhile period; for others it is the moment they realise the plan was never a single purchase.
Questions worth asking before a schedule is agreed
- How many sessions, at what interval, and what happens at the review point if the response is poor in your case.
- Whether the price quoted covers the course or the first session, and what a repeated course over two years would involve.
- Who decides when to stop, and whether stopping is a clinical decision or a commercial one.
A schedule is not a small detail. It is most of what distinguishes a plan built around your skin from a quantity of sessions sold in advance.
Frequently asked questions
Why is a course needed instead of one treatment?
Because a single session delivers a limited amount of controlled heat, and the collagen response is what produces the change. Several sessions spaced apart build the total dose up and allow the tissue to repair between them. A clinic offering one session as sufficient is describing a smaller treatment than the one the results are attributed to.
How is the interval between sessions decided?
From the repair, not from the calendar. The tissue needs time to respond to the heat before it is heated again, which is why radiofrequency sessions are usually spaced weeks apart and microfocused ultrasound sessions further apart still. Compressing the interval increases the risk of over-treating an area without producing a larger change.
What does maintenance look like over several years?
Usually a return at intervals measured in months, decided from how the change is holding rather than from a fixed package. Some patients return once a year, some more often, and some decide after a year or two that they are content to stop. The schedule should follow your face rather than a prepaid course.
Risks & Limitations
- Redness, warmth and tenderness for some hours after radiofrequency, and swelling or tenderness for several days after microfocused ultrasound, are expected rather than complications.
- Both treatments can burn. Blistering, crusting and a burn that leaves a mark are recognised risks, and they rise with higher settings and with skin that heals poorly.
- Microfocused ultrasound is genuinely uncomfortable during treatment; numbing reduces the sensation rather than removing it.
- Contour irregularity — hollowing or an uneven surface from over-treatment — is a recognised risk of the deeper ultrasound planes.
- Nerve-related problems, including numbness or weakness affecting part of the face, are recognised risks of microfocused ultrasound in inexperienced hands.
- Neither treatment is reversible. There is no way to remove energy that has already been delivered, and a contour or nerve problem cannot simply be undone.
- The change is modest and temporary: it develops over weeks to months, is judged fairly at 3–6 months, and fades as ageing continues. Maintenance is part of the plan.
- Neither treatment repositions descended tissue, removes fat, restores volume or changes skin pigment, at any setting or over any number of sessions.
- Active skin disease, recent sun exposure, a history of poor scarring and some medicines change fitness for treatment, and no outcome is guaranteed for either option.
When to Seek Care
- Blistering, crusting, or skin that turns white, grey or dusky in the treated area — contact the treating team the same day.
- Severe or worsening pain, or swelling that continues to increase after the first 48 hours.
- Numbness, weakness or drooping affecting part of the face, or a change in your ability to close an eye or smile evenly — seek urgent assessment.
- Fever, spreading redness, warmth or discharge from the treated area.
- A burn or wound that is not healing, or any break in the skin that appears after treatment.
- Difficulty breathing, chest pain or fainting — seek emergency care immediately.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — non-surgical skin tightening and patient safety guidance
- International Society of Aesthetic Plastic Surgery (ISAPS) — global standards of practice
- National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
- Cochrane Library — systematic reviews in skin and laser treatment
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.