When we talk about anti-aging, most people think of filling wrinkles or relaxing expression lines. But there is an approach that does neither: it regenerates. Polynucleotides represent one of the most interesting developments in modern aesthetic medicine because they act not on the visible symptom, but on the deep structure that supports the skin.

Your skin doesn’t need haste, it needs criteria. And polynucleotides are, precisely, a tool of criteria: they don’t promise immediate results or dramatic effects. They promise something more valuable — a progressive regeneration that restores skin quality from within.

What are polynucleotides?

Polynucleotides are purified fragments of nucleic acids (DNA and RNA) of biological origin, used in regenerative medicine for decades. In aesthetic medicine, they are injected into the dermis to stimulate cellular repair, improve elasticity, and promote tissue regeneration.

Unlike retinoids or exfoliating acids, which act on the surface, polynucleotides work in the deep dermis, where fibroblasts reside — the cells responsible for producing collagen, elastin, and endogenous hyaluronic acid. Their mechanism of action is based on biostimulation: molecular signals that reactivate repair processes that the skin, due to age or accumulated damage, no longer executes with the same efficiency.

Why skin loses its regenerative capacity

Over the years, fibroblasts lose activity. Collagen production decreases, elastin fragments, and endogenous hyaluronic acid diminishes. The result is thinner, less elastic skin, more prone to dryness and the appearance of fine lines.

This is compounded by external factors: accumulated sun radiation, pollution, oxidative stress, hormonal changes. Not everything that can be done should be done, and this is where medical criteria comes in: it’s not about applying the most aggressive treatment, but the most appropriate one for each skin and each life stage.

What benefits polynucleotide treatment provides

1. Biostimulation of collagen and elastin

Polynucleotides reactivate the synthesis of type I and III collagen, as well as functional elastin. It’s not a filler: it’s a reactivation of the skin’s own cellular machinery. Results appear progressively, between 3 and 6 weeks after treatment.

2. Improvement of the skin barrier function

By strengthening the dermis, the skin barrier is also reinforced. A healthy barrier retains hydration better, is more resistant to external irritants, and shows less subclinical inflammation — one of the factors that accelerates silent aging.

3. Reduction of fine lines and improvement of elasticity

Skin treated with polynucleotides recovers elasticity and turgor. Fine lines — especially around the mouth, eye contour, and neck — fade naturally, without altering facial expression.

4. Antioxidant action and sun damage repair

Polynucleotides have free radical scavenging capacity and promote the repair of cellular damage induced by UV radiation. They are particularly useful in skin with mild to moderate photoaging, as a complement to a skin longevity plan.

5. Biocompatibility and safety

As purified nucleic acid fragments, polynucleotides have a highly favorable safety profile. They are non-toxic, non-immunogenic, and biodegrade physiologically. The protocol typically requires 2-3 sessions at 2-4 week intervals.

The Skin Esthetic approach: barrier first, anti-aging after

At Skin Esthetic del Levante we work with a clear principle: before stimulating, you must prepare. Polynucleotides are not a shortcut or a substitute for daily skincare. They are a tool that, integrated into a skin longevity plan, enhances the results of cosmetics and other treatments.

Our protocol includes a prior medical assessment to determine whether the skin’s barrier function is in optimal condition. If the barrier is compromised, it is repaired first. Then, the incorporation of polynucleotides is evaluated according to skin type, biological age, and patient goals.

When to consult a professional

Polynucleotides are a medical injectable treatment. They should not be applied without prior assessment or in non-medical settings. It is especially important in cases of:

• Skin with photoaging that does not respond to topical cosmetics
• People seeking skin quality improvement, not volume or filling
• As a complement to other treatments (mesotherapy, radiofrequency, chemical peels)
• In specific areas: neck, décolletage, eye contour, hands

Honest medical criteria means knowing when a treatment is not necessary, when it is, and when it’s better to wait. It’s not about doing more, but about doing what’s right.