Skin Booster Aftercare and Downtime: What the First Two Weeks Look Like

The short answer

Most people notice redness, mild swelling and small bumps at the injection points, and these usually settle within a few days. Bruising can last longer, especially around the eyes. One manufacturer’s patient leaflet says most side effects go away within one to two weeks and asks patients to report anything that lasts beyond 14 days. In the first day, avoid hard exercise, heat, strong sun and touching the area. Your doctor sets the exact schedule for your treatment and gives the instructions that apply to your product.

A timeline of the first two weeks

Downtime after a skin booster is short, and the skin booster treatment at the clinic is described as having minimal downtime. Most people go back to normal activity straight away. The table combines the clinic’s own timings with published guidance. It describes the common pattern, not a promise for your skin.

Timings can shift with the product, the area and the individual. The clinic says its skin booster timings describe the service as a whole and that polynucleotides may differ, so your doctor tells you what to expect with your product.

The wider evidence points the same way. A 2023 systematic review of injectable hyaluronic acid for facial skin quality found all formulations very well tolerated, with bruising, swelling and tenderness as the most common events, typically lasting less than two weeks. Expected does not mean identical, though. How visible a bump or a bruise looks depends on the area treated, the technique and the person, so two patients can follow the same timeline and still look different on day three.

What to do after the session

The published guidance for a hyaluronic acid booster is short and practical. Avoid touching or shaving the treated area, and apply no creams or cosmetics there until the skin has healed completely, to prevent infection and other local reactions. If heat, sun or exercise make the area red, swollen or itchy, the leaflet suggests a short application of an ice pack for relief.

The clinic adds three habits: keep the skin clean, use SPF, and avoid make-up for the rest of the day. The clinic also notes that many people book a session a day or two before an event rather than on the morning of it. That gap gives bumps and pinprick marks time to settle. If you are planning treatment around a trip, our article on biorevitalization before or after a vacation covers the timing question.

What to avoid in the first day

Sources agree on the direction and differ on the length, which is why your own doctor’s instruction wins:

• Hard exercise. The manufacturer’s leaflet says to avoid or minimize it for the first 24 hours. The clinic says to avoid heavy exercise for the rest of the day.
• Heat. The clinic lists saunas and heat. The leaflet says to avoid or minimize extreme temperatures and UV lamps until swelling and redness have resolved.
• Direct sun. The clinic advises against it for the rest of the day, and the leaflet links sun exposure to temporary redness, swelling and itching of the treated area.
• Make-up and products on the treated skin. The clinic says to skip make-up for the rest of the day. The leaflet says to apply nothing to the area until it has healed.

When two instructions differ, follow the stricter one until your doctor says otherwise.

If you combine a booster with other treatments

The clinic says a booster can be a standalone course or part of a combination plan with lasers, peels, PRP, collagen therapy or other procedures, and that the doctor checks whether a combination makes sense and how to space the visits. Spacing matters for recovery. The manufacturer’s leaflet lists recent laser treatment, mechanical peels and chemical peels as reasons to speak to your doctor before an injection, because they may increase the risk of redness, swelling, heat or pain of the skin. Tell the doctor about every treatment you had in recent weeks, and ask when the next one can safely follow. Our article on whether skin boosters are safe lists who should postpone or avoid treatment.

Under the eyes and after polynucleotides

The under-eye area behaves differently. The clinic says bruising around the eyes lasts longer and that the area carries a higher risk of swelling, so it is treated only after assessment. A 2026 retrospective study of 23 patients who had polynucleotide injections around the eyes, 91 sessions in all, recorded two mild events: one case of transient swelling around the eyes about 12 hours after treatment, which resolved without treatment, and one case of papules that persisted at the injection site for up to 24 hours. The study was small and looked back at records, so treat it as a description of one small group.

Polynucleotide products can also leave visible raised marks at the injection points. In a 2026 split-face study of a polynucleotide product, this injection-site embossing appeared only on the side treated with the intradermal technique, and it was mostly mild to moderate. The injection technique therefore affects what you see afterward, and your doctor chooses it.

Signs to report even if they are not an emergency

Call your doctor, without rushing to an emergency room, if any of these happens:

• injection-site reactions such as swelling, redness, pain or itching last beyond 14 days;
• blisters or sores that keep coming back, which may signal a herpes infection;
• a lump appears days or weeks after the session;
• you feel significant pain away from the injection site.

These items come from the manufacturer’s leaflet and from the clinic’s treatment page. Early contact lets the doctor decide whether you need a visit.