Rejuran Downtime Explained: What to Expect After Treatment

Rejuran Downtime Explained: What to Expect After Treatment

Rejuran is popular among people who want to improve their skin quality without dramatically changing their facial shape or expressions. However, although it is often described as a treatment with minimal downtime, it does not always leave the skin looking completely normal immediately after the appointment.

Small injection bumps, redness, tenderness, swelling and occasional bruising can appear after treatment. These reactions are usually temporary and are largely associated with the multiple intradermal injections used to place the product within the skin. Clinical research into polynucleotide injectables has identified swelling, redness, pain, bruising, firmness and temporary papules among the expected post-treatment reactions.

So, how long does Rejuran downtime last, and when can you return to work, wear makeup or attend an important event? Here is a realistic guide to what you may experience during the first few hours and days after treatment.

How Long Is Rejuran Downtime?

For many patients, the most noticeable Rejuran downtime lasts approximately one to three days. During this period, the skin may have small raised bumps at the injection points, mild redness or puffiness.

However, recovery is not identical for everyone. Some people look relatively settled the following day, while others may experience visible swelling or bruising for several days. In a recent real-world study involving intradermal polynucleotide and hyaluronic acid injections, temporary reactions resolved within minutes to a maximum of eight days, depending on the symptom. Most were mild to moderate, although a small proportion of patients experienced more noticeable pain or swelling.

A practical way to think about recovery is:

Plan more recovery time when treating a large area, the delicate under-eye region or multiple areas during one session.

What Does the Skin Look Like Immediately After Rejuran?

Immediately after treatment, the skin may look red, slightly swollen and covered with small raised injection points. These bumps are sometimes described as tiny mosquito bites.

They appear because Rejuran is placed through multiple small injections rather than being applied to the skin’s surface. The number, height and visibility of these bumps can vary according to the treatment area, injection depth, product volume and technique used by the practitioner.

You may also notice:

Temporary redness, swelling, pain, bruising, firmness and heat sensations have all been reported following intradermal polynucleotide procedures.

These immediate reactions do not indicate the final result of your treatment.

A Day-by-Day Rejuran Recovery Timeline

The First Few Hours

The injection bumps are generally at their most visible immediately after the procedure. Your face may appear puffy, flushed or uneven, particularly when a larger number of injections have been used.

Mild stinging or tenderness may continue after the numbing cream wears off. Some people also experience a warm sensation around the treated area. In clinical monitoring of polynucleotide injections, pain and heat sensations were among the reactions that could resolve within minutes or shortly after treatment.

Avoid pressing, rubbing or repeatedly touching the skin unless your practitioner has specifically instructed you to massage the area.

The First Night

By the evening, the redness may begin to settle, although the raised injection points can remain noticeable.

Swelling may become more apparent around the eyes because the skin in this area is thin and delicate. Sleeping on your back with your head slightly elevated may help minimise pressure against the treated area.

Do not be alarmed if your skin looks less settled before it begins to improve. Mild post-injection swelling can fluctuate during the first 24 hours.

The Next Morning

Many patients still have visible bumps or puffiness the morning after Rejuran. Some injection points may look like tiny red dots, while others may appear skin-coloured.

The face may also feel slightly tender when cleansing or applying skincare. Use gentle movements rather than scrubbing or massaging the skin.

This is often the main period of social downtime. You may feel physically able to work, but the injection marks might still be visible during face-to-face meetings or photographs.

Days Two to Three

The majority of the raised bumps and redness should gradually flatten during this period. Mild puffiness may remain, particularly beneath the eyes or in areas where more product was placed.

Small bruises may become more noticeable as the swelling subsides. This does not necessarily mean the treatment has become worse; bruising often changes colour as it heals.

By the end of this stage, many patients feel comfortable returning to their usual social routine.

Days Four to Seven

Most temporary injection marks should have settled considerably. Any remaining downtime is more likely to involve isolated bruising, mild tenderness or lingering swelling.

Evidence from broader polynucleotide treatments suggests that these reactions are generally temporary. One study of intradermal PN-based injections found that all recorded adverse events resolved spontaneously within eight days, with no serious or unexpected events reported.

Contact your practitioner when symptoms are not improving, are becoming more painful or look significantly different from the recovery guidance you were given.

The Most Common Rejuran Side Effects

Small Injection Bumps

Temporary raised bumps are one of the most recognisable parts of Rejuran downtime. These papules form at the injection points and can make the skin look textured or uneven.

They should gradually flatten as the treatment settles. Their visibility may depend on how superficially the product was injected and the amount placed at each point.

Do not squeeze, scratch or press the bumps in an attempt to flatten them faster.

Redness

Mild redness is a common response to the needle entering the skin. It may be concentrated around each injection point or spread more generally across the treatment area.

Redness should gradually become less noticeable rather than continuously intensifying. Persistent redness accompanied by heat, increasing pain or discharge should be assessed.

Swelling

Swelling may be mild and localised or more noticeable across the treated area. It is commonly more visible around the eyes.

In a real-world evaluation of PN-based intradermal treatment, swelling was among the expected temporary reactions. Most adverse events were mild to moderate, although 4.3% of the study respondents reporting safety data experienced moderate-to-severe swelling.

Bruising

A needle can occasionally affect a small blood vessel, creating a bruise. Bruising may not appear immediately and can become darker the day after treatment.

People who bruise easily or take certain medications may experience more visible bruising. Never stop prescribed blood-thinning medication without speaking to the healthcare professional who prescribed it.

Tenderness or Mild Pain

Mild soreness, stinging or sensitivity may occur around the injection points. The discomfort should generally become less intense as the skin settles.

Severe, escalating or unusual pain is not something to ignore and should be reported promptly.

Itching or Firmness

Some people may notice mild itching or small areas of temporary firmness. Polynucleotide studies have monitored itching, induration, papules and wheals as potential post-injection reactions.

Avoid scratching the area, as this can irritate the skin and introduce bacteria.

How to Reduce Rejuran Downtime

Your practitioner’s instructions should always take priority because aftercare can vary according to the product, injection method and treatment area.

General aftercare advice for cosmetic injections commonly includes avoiding strenuous exercise for approximately 24 hours and limiting excessive sun or heat exposure during the early recovery period. Stanford Medicine’s filler aftercare guidance also recommends avoiding significant movement or massage of the treated area unless directed by the provider.

You may support a smoother recovery by:

A wrapped cool compress may sometimes be used to ease swelling, but do not place ice directly against the skin or apply heavy pressure. Stanford’s general filler guidance suggests cold compresses as one method of reducing swelling, although your Rejuran provider may recommend a different approach.

Can You Wear Makeup After Rejuran?

Your provider may advise waiting until the injection points have closed before applying makeup. This helps reduce unnecessary contact with freshly treated skin.

When you are cleared to use makeup:

Do not use makeup to cover an area that is bleeding, weeping or unusually irritated.

Because protocols differ, follow the specific timing provided by your treating clinic rather than relying on a universal rule.

Can You Exercise After Rejuran?

Light walking is generally less concerning than strenuous exercise, but intense workouts may increase facial warmth, blood flow, sweating and swelling.

General medical guidance following aesthetic filler injections recommends avoiding strenuous exercise for 24 hours.

Activities to postpone may include:

Resume exercise according to your practitioner’s instructions, especially after under-eye treatment or when you have significant bruising.

When Should You Schedule Rejuran Before an Event?

Do not arrange your first Rejuran appointment immediately before a wedding, professional photoshoot, important presentation or overseas flight.

Although many people recover quickly, it is impossible to guarantee that you will have no bruising or swelling. A conservative approach is to leave at least one to two weeks between treatment and an important event, particularly when:

This provides a buffer for unexpected bruising and allows the skin to look more settled.

What Is Not Considered Normal After Rejuran?

Mild redness, tenderness and puffiness can be expected, but symptoms should generally improve with time.

Contact your practitioner promptly when you experience:

Hot, swollen and painful skin, pus and fever can be signs of a skin infection and require medical assessment.

Seek urgent medical help for any visual disturbance, loss of vision or severe pain after a facial injectable procedure. These symptoms are treated as emergencies in medical aftercare guidance for cosmetic injections.

Does More Downtime Mean Better Rejuran Results?

More swelling or more visible bumps do not automatically mean the treatment will produce a better result.

The amount of downtime can be influenced by:

Similarly, having very little downtime does not mean the treatment has failed. Recovery reactions and longer-term skin changes are separate issues.

Clinical evidence on polynucleotide injectables is promising but still developing. A 2024 review noted growing aesthetic use while also highlighting limitations in the quantity and quality of available clinical evidence.

Frequently Asked Questions About Rejuran Downtime

Can I go to work the day after Rejuran?

Many people can physically return to work the next day. However, injection bumps, redness or swelling may still be visible. Working from home for one or two days may be preferable when appearance is important.

How long do Rejuran injection bumps last?

They commonly improve during the first few days, but the exact timing depends on the injection technique, treatment area and individual response. Contact your provider if bumps are painful, inflamed or not gradually settling.

Is swelling under the eyes normal?

Some temporary puffiness can occur after injections around the eyes. Because this area is delicate, swelling may look more noticeable than it does elsewhere. Rapidly worsening, painful or one-sided swelling should be assessed.

How long can Rejuran bruising last?

Small bruises may remain visible after the other injection marks have settled. Healing time varies depending on the size of the bruise, the treatment area and your tendency to bruise.

Can I wash my face after Rejuran?

Your practitioner will tell you when and how to cleanse your skin. Once permitted, use clean hands, lukewarm water and a gentle cleanser. Avoid hot water, scrubs, cleansing brushes and vigorous rubbing during the early recovery period.

Is Rejuran downtime worse after full-face treatment?

Full-face treatment may create more visible injection points than treating one small area. This can increase social downtime even when discomfort remains mild.

Final Thoughts

Rejuran downtime is usually manageable, but it is important to have realistic expectations. The treatment can temporarily leave your skin with raised injection bumps, redness, tenderness, swelling or bruising.

For many patients, the most visible effects improve within one to three days. However, some reactions can last longer, especially bruising or swelling around the eyes. Clinical studies of polynucleotide injectables generally report temporary local reactions and have not identified serious adverse events in the small controlled trials available, but no injectable treatment is completely risk-free.

Choose an appropriately qualified medical practitioner, follow the aftercare instructions carefully and contact the clinic when your recovery does not follow the expected pattern.

This article provides general educational information and does not replace an individual consultation, diagnosis or medical advice from a qualified healthcare professional.