How Many Skin Booster Sessions Do You Need and How Long Do Results Last?

The short answer

There is no single number. The two studies and the one manufacturer leaflet reviewed here used an initial course of three sessions, three to four weeks apart, and the clinic describes most plans as two to four sessions a few weeks apart. Top-up timing depends on the product and the skin. How long results last is less certain, because the studies behind those schedules followed patients for 12 weeks to six months. Your doctor sets your plan at the consultation and adjusts it as your skin responds.

Why the number differs from person to person

A skin booster changes skin quality gradually, so a single injection session is rarely the whole plan. What varies is everything around it. The product matters: hyaluronic acid boosters and polynucleotide boosters are different materials, and some hyaluronic acid products are designed to spread from a few injection points, others from a grid of micro-points. The skin matters too. At the consultation the doctor checks hydration, elasticity, sensitivity, inflammation, previous procedures and allergies, then picks the product, the technique and the number of sessions.

The skin booster course at the clinic is described on its treatment page in similar terms. Most plans run two to four sessions a few weeks apart, followed by maintenance every few months. A stronger booster such as Profhilo often runs as two sessions a month apart. For polynucleotide products the clinic gives no fixed number or interval, and states that the doctor sets both and that repeated treatments are typical. Use these as orientation only. The plan written for you is the one that counts.

The two material groups also behave differently in the plan. Polynucleotides are DNA-based preparations, listed as PDRN, and they work on skin quality by a different route than hyaluronic acid. That is one reason a schedule from a hyaluronic acid study cannot simply be copied onto a polynucleotide course, or the other way round.

What the published schedules look like

Three sources describe concrete schedules. They cover different products, so they do not add up to one rule, but they show how treatment is usually structured.

Three sessions spaced three to four weeks apart means roughly six to eight weeks between the first and the last visit. The leaflet’s 6-month maintenance interval applies to that specific product and the skin situation of the patient. It is not a universal top-up date. For the lines of Rejuran and what each is described for, read our article on Rejuran Healer, S and i.

How long results last: what the evidence covers

Two sources in the table followed patients as far as six months. The leaflet reports improvement in elasticity and skin morphology up to 6 months after the initial treatment in clinical studies with its product. The 81-volunteer study reported that improvements in uniformity, viscoelasticity, firmness, water content and wrinkle depth were maintained during follow-up at 15 days, 3 months and 6 months. Neither source followed patients beyond six months, so neither tells you what happens at a year.

For polynucleotides the picture is thinner. The 2026 split-face trial stopped at week 12, and its authors state that it was not designed to evaluate longer-term durability or the cumulative effect of repeated treatments. A 2026 systematic review of seven randomized trials of polynucleotides and PDRN, with 183 participants, concludes that the evidence is limited by small samples and short follow-up and that larger, longer studies are needed. So any claim that a polynucleotide course lasts a set number of months goes beyond what these sources show.

What the treatment page says about results and upkeep

The clinic’s treatment page describes the effect on skin quality as real but temporary: it fades without upkeep, and how well it holds depends on your skin, age and lifestyle. It says skin usually looks more hydrated within a week or two, with quality and firmness improving across the course. The doctor reviews progress through the course, which is why the plan can change during the course. A schedule that looked right on day one may shorten or lengthen once you see how your skin responds.

Planning a course around your calendar

Start with the dates that matter to you, and tell the doctor about them at the consultation. The clinic notes that many people time a session a day or two before an event rather than on the morning of it, because small bumps and pinprick marks usually settle within 24 to 72 hours and can stay visible for up to a week. With a course of several sessions, leave room for the whole sequence before a trip or an occasion. Our article on skin booster aftercare and downtime describes what each visit leaves behind. Your doctor sets the exact schedule for your treatment.

Questions to bring to the consultation

A plan is easier to judge when you ask for its parts. Ask which product the doctor proposes and why, how many sessions the doctor expects and how far apart, what maintenance would look like after the course, and how progress will be judged. Ask what changes if your skin responds more slowly than expected. The clinic says some plans combine a booster with lasers, peels, PRP or devices, and in that case the doctor also spaces the other treatments around the booster sessions. Each booster session usually takes 20 to 30 minutes, depending on the area and the product, so a course also means planning your calendar for several visits.