Rejuran has gone from a K-beauty insider secret to one of the most requested treatments in London clinics — and for good reason. But with popularity comes a flood of confusing information, and Rejuran is exactly the kind of treatment where understanding the science first makes all the difference to your results.

What Is Rejuran?

Rejuran is a Korean-developed injectable treatment built around purified polynucleotides — fragments derived from DNA that are highly biocompatible with human skin. Rather than adding volume like a dermal filler, Rejuran works to repair and regenerate the skin's own structure from within.

The Science: Polynucleotides Explained Simply

Polynucleotides act as a signal to your skin's own repair mechanisms. Once injected, they help stimulate fibroblast activity, support tissue repair, and improve hydration at a cellular level. The result is a gradual improvement in skin texture, elasticity and overall resilience, rather than an instant plumping effect.

What Does Rejuran Actually Treat?

Rejuran is commonly used for overall skin quality improvement — fine lines, dullness, acne scarring, and general loss of elasticity — as well as more targeted concerns like the delicate under-eye area, where it's often chosen as a gentler alternative to traditional tear trough filler.

What's a Rejuran Course Like?

Rejuran is typically delivered as a course of sessions, spaced around three to four weeks apart, with improvements building progressively as the skin's repair response continues between visits. Most people notice a gradual 'glass skin' quality developing over the weeks following each session, rather than an immediate transformation.

How to Vet a Genuine Rejuran Provider in the UK

Because of its popularity, Rejuran has attracted counterfeit and unlicensed products entering the UK market. Before booking, it's worth asking directly whether the clinic is an official, verified UK partner for the product — and whether the practitioner performing the treatment is medically qualified. A genuine partnership and a GMC-registered injector are two of the simplest ways to protect yourself.

Frequently Asked Questions

Is Rejuran the same as a dermal filler?

No — filler adds immediate volume, whereas Rejuran works to repair and regenerate the skin's own structure gradually, improving quality and elasticity rather than shape alone.

How many Rejuran sessions will I need?

Most courses involve three sessions spaced roughly three to four weeks apart, though this can vary depending on your skin concern and goals.

How long do Rejuran results last?

Following a full course, many people see benefits lasting around six to twelve months, with some choosing periodic maintenance sessions to sustain the effect.

How can I tell if a clinic is using genuine Rejuran?

Ask directly whether the clinic is a verified official UK partner and confirm the treating practitioner's medical qualifications — reputable clinics will be transparent about both.

Book a Consultation

Interested in seeing what Rejuran could do for your skin? Book a consultation with Dr Dianni Dai at Dr L'Art — an official UK partner for Rejuran Korean Polynucleotides.