In short. Why the schedule is the treatment: the intervals, the number of visits, the review point, and why a course not attended as planned is a different treatment.

Key points

  • Sessions compressed to fit a holiday, or spread so far apart that each starts again from the beginning, are a different treatment from the one described to you.
  • If the calendar cannot absorb the plan, postponing the course is more honest than compressing it.

A skin booster is described to patients as a treatment and bought as a product, and the two lead to different decisions. The part that most often decides whether a patient is satisfied is not which substance is used but whether the course is attended as planned. That is a question about a calendar rather than about skin.

What the schedule actually is

A course is a small number of sessions at planned intervals, with a review once it is complete. The intervals are not arbitrary: each session goes into skin that has settled from the last one, and the spacing is chosen so the effect builds rather than overlaps. The number of sessions and the gap between them are set by how your skin responds at each visit, so a plan given before the first session is an estimate rather than a promise. What matters for the decision is the shape of it: several appointments across some months, not one.

The schedule is the treatment

Sessions compressed to fit a holiday, or spread so far apart that each starts again from the beginning, are a different treatment from the one described to you. If the calendar cannot absorb the plan, postponing the course is more honest than compressing it.

What happens when the schedule slips

Patients miss sessions for ordinary reasons: work, travel, illness, a family event. One missed appointment is a scheduling problem and the course continues. A pattern of them is different, because the skin is being asked to build on a foundation that keeps being interrupted, and the result becomes difficult to judge. Tell the clinic when the calendar comes under pressure rather than at the end, because the plan can be re-cut around a realistic schedule and often is.

What else the calendar has to hold

Bruising is the part of this treatment with a social cost. Most patients are presentable within a day or two, but small bruises can appear under the eyes and along the jaw and take several days to fade. The first session produces them most often, because the tissue has not been treated before. Ask which days you are most likely to look marked, and place the course around your commitments rather than the reverse.

Postpone the course rather than compress it

  • You cannot attend the planned intervals, or the coming months are already committed.
  • A significant event falls inside the bruising window of a session.
  • You are pregnant or breastfeeding, or an active skin problem is being treated.

What to settle before you agree

Before the first session, ask how many visits are proposed, over what period, where the review point sits, and what happens if the course is interrupted. Ask too what the plan is if your skin responds faster or slower than expected, because that is the point at which a course either adapts or is quietly abandoned. A patient who knows the shape of the schedule can decide whether it fits a life.

Related reading

Frequently asked questions

Why must booster sessions be spaced apart?

Because each session is placed into skin that has settled from the one before it. Placing them back to back overlaps the tissue response, makes the result harder to judge at the review, and adds bruising days without adding effect. The spacing exists so the plan can be adjusted from what your skin actually did rather than from what was assumed.

How long is the whole course from start to review?

Commonly a few months rather than a few weeks, with sessions at planned intervals and a review once the course is complete. The exact length is set by how your skin responds, so the interval between the first and second session is often revised afterwards. Ask for the estimate as a range and ask what would move it.

What if I cannot attend every session?

A single missed appointment is a scheduling problem and the course continues. A pattern of missed sessions is different, because the skin is being asked to build on a foundation that keeps being interrupted. Tell the clinic early rather than at the end, because a plan re-cut around a realistic calendar is usually better than a plan abandoned half way.

Risks & Limitations

  • Bruising and pinpoint marks are expected after a session and usually settle within a few days.
  • Small bumps can appear where the material is placed, most often under the eyes, and most flatten on their own.
  • An uneven result is possible, and a further session may be needed to even it.
  • Infection or a delayed reaction at a treated area is uncommon and should be reviewed rather than waited out.
  • The effect fades over months and the skin returns towards its earlier state. It cannot be made permanent, and no result can be guaranteed.

When to Seek Care

  • Difficulty breathing, chest pain or swelling of the face or throat: seek emergency care immediately.
  • Redness, warmth, swelling or discharge spreading from an injection point.
  • A lump that is growing, or that is painful rather than tender.
  • Blistering, patchy discolouration of the skin, or any change in vision or in sensation around a treated area.

References & Further Reading

  • American Society of Plastic Surgeons (ASPS) — procedure and safety guidance
  • National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
  • Cochrane Library — systematic reviews
  • Chinese Medical Association Plastic Surgery Branch — clinical guidance

Medically reviewed by Ke He, MD (何锞), Deputy Director & Head of Skin & Laser Aesthetics. Last reviewed: 19 September 2026.

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.