Growth Factors in Cosmetology — What is estGen and How Does Tissue Engineering Work

estGen Brand · Expert Cosmetology

There is so much talk about growth factors in cosmetology today that it is easy to get lost between science and marketing. estGen — a Polish brand that defines its philosophy as "tissue engineering" — is one of the most frequently chosen systems when the skin needs not just smoothing, but real regeneration: after treatments, after injuries, or after years of neglect. We explain how it works and for whom it truly makes sense.

What is estGen

estGen is a professional Polish cosmetology brand created by cosmetologist Katarzyna Nozderko. The preparations are developed in Polish laboratories and — importantly — are sold exclusively in clinics, under the supervision of a cosmetologist. These are not "off-the-shelf" cosmetics: they are a system of professional and home care with high concentrations of active ingredients, housed in airless packaging that protects sensitive components from oxidation.

The brand's philosophy is clearly defined: not "aggression," but restoring balance. The preparations are designed to support the skin's natural repair processes rather than forcibly replacing them. Some products have the status of oncocosmetics — they are formulated so that they can also be used by weakened skin, during and after oncological treatment (always in consultation with a doctor).

What is "tissue engineering" all about

The name sounds serious, and that is the intention. The estGen concept is based on the synergy of two elements: controlled micro-damage to the skin (e.g., during microneedling) and a preparation that, at that moment, "tells" the skin what to do next.

According to the manufacturer, the formulas contain isolated proteins: growth factors, immunomodulatory proteins, enzymes, and derivatives of nucleic acids and amino acids. A key element is the transferrin complex, which — as the brand declares — enhances the action of growth factors, particularly IGF-1, EGF, and FGF. The intended effect is to stimulate fibroblasts to produce collagen and elastin and to improve microcirculation.

Important distinction: descriptions of the mechanism "at the cellular level" are the manufacturer's claims, not conclusions from independent clinical studies. We treat them as the brand's technological premise — honestly, without promising miracles.

Ingredients that make a difference

Let's take a look at the composition — because that is what distinguishes estGen from an ordinary serum. Below are the active ingredients confirmed in the brand's formulas:

• Colostrum — a natural source of growth factors and proteins; supports tissue regeneration. This is the heart of, among others, the Active Cream.
• Lactoferrin — a protein with antimicrobial and immunomodulatory properties; helps soothe inflammation.
• Hyaluronic acid (sodium hyaluronate) — hydration and support for the extracellular matrix.
• Biomimetic peptides (e.g., palmitoyl oligopeptide) — signaling molecules that "talk" to the skin. Their purest form is the Active Peptide Concentrate.
• Collagen and elastin and their amino acids — the building blocks of skin structure.
• Silver (colloidal or silver oxide in a dressing) — antibacterial action, essential for damaged skin.

What won't you find in this article? Specific concentrations — the brand does not disclose them publicly, so we won't make them up. This is actually a good practice: a reliable clinic selects the preparation based on the skin's needs, not the number on the label.

estGen product line

The line includes nearly 30 preparations — from cleansing to photoprotection. Below are those where the philosophy of "tissue engineering" is most visible. Click to see the full composition and availability in the store:

Youth ActivatorActive proteins and growth factors — triggers renewal across all skin layers.Price upon consultationView Active SheetSheet mask with proteins and growth factors. Lifting and glow for special occasions.Price upon consultationView Active Peptide ConcentrateThe power of neuropeptides — calms erythema and redness in sensitive and vascular skin.Price upon consultationView NEURO lifting creamBiotechnological lifting: reactivates structural fiber synthesis, firms the facial contour.Price upon consultationView Active DressingProfessional solution for scars and stretch marks — post-suture, with colostrum and silver oxide.Price upon consultationView Active CreamColostrum and colloidal silver — maximum regeneration for problematic and inflamed skin.Price upon consultationView EPI serumEpigenetic potential — regulates aging markers and supports collagen production.Price upon consultationView Eye CreamComprehensive lifting for the most demanding area — including the upper eyelid.Price upon consultationView

Prices and availability are current at the J'adore Instytut store — clicking takes you to the product page.

Who is estGen for?

This is a "repair" brand, so it works best where the skin has a specific task to perform:

• mature skin that has lost firmness and even tone,
• scars — post-acne, post-operative, post-traumatic, as well as stretch marks (this is where the Active Dressing works),
• acne vulgaris, rosacea, and skin prone to inflammation,
• skin after aesthetic medicine procedures (laser, peels) that needs regeneration support,
• demanding skin — including during pregnancy or for teenagers (selected products), always after consultation.

How estGen works with treatments

estGen preparations are the foundation of proprietary clinical protocols, combined with controlled skin micro-injury:

• Microneedling mesotherapy (dermapen) — usually a series of treatments every 4–6 weeks; the exact plan is determined by the cosmetologist.
• Microneedle Radiofrequency — typically 1–3 treatments at longer intervals.
• Home care — individually selected, it "seals" and extends the treatment effects.

In a separate article, we show how to build an estGen routine step by step — from cleansing to photoprotection.

What to expect: estGen results over time

Skin doesn't change overnight — and that's good news, not bad. Regular care based on growth factors and peptides works at the cellular level, and the processes of epidermal renewal and collagen remodeling have their own natural biological rhythm. Understanding this rhythm helps you wait patiently for results and not get discouraged after the first week when changes are still subtle. Below is a general, dermatologically sound timeline of skin adaptation with systematic use of this type of active care — including the products from the estGen line you've already encountered in this article.

Week 1: Adaptation phase. This is the moment when the skin "learns" the new skincare routine. The epidermal barrier reacts to new active ingredients, so it's worth introducing products gradually at the start — beginning with the toning liquid and NEUROlifting cream, then adding the EPI serum or Active Peptide Concentrate. In this phase, a subtle improvement in hydration and a feeling of greater skin comfort are most commonly observed, especially if it was previously dehydrated or irritated. It's normal for the effects to be gentle for now — cellular receptors and microcirculation are just beginning to respond to the regular supply of peptides and growth factors. Patience at this stage pays off later.

Week 4: results become visible. After a month of consistent use, the skin usually enters a phase where changes are visible to the naked eye — not just to you, but to those around you. Your skin tone evens out, your complexion gains firmness, and fine lines may appear less noticeable thanks to improved hydration and skin tension. This is a cumulative effect — signaling peptides and growth factors work during this time to support natural synthesis processes in the dermis, while regular use of the Living Mask or DEX-STOP fluid (for vascular skin prone to redness) further enhances comfort and appearance. This stage is also a good time to assess how well your home care routine complements your in-clinic treatments — if it works well, it is worth continuing without interruption.

Week 8 and beyond: structural effects. Rebuilding the extracellular matrix — the network of collagen, elastin, and hyaluronic acid that supports the skin — is a process measured in weeks and months, not days. After eight weeks of consistent use of the estGen line, the skin typically shows more lasting results: improved density, elasticity, and overall condition that do not disappear after missing a single skincare session. This is because skin cells — fibroblasts and keratinocytes — have had enough time to respond to the signals provided by peptides and growth factors in a lasting, rather than temporary, way. It is worth remembering that the pace and scale of results are individual — they depend on age, the initial state of the skin, sun exposure, and how consistently the skincare routine is followed.

• Week 1 — skin adaptation, subtle improvement in hydration and comfort
• Week 4 — visible improvement in skin firmness and tone
• Week 8+ — structural effects: density, elasticity, and more lasting improvement in skin condition

That is why in our clinic we always emphasize one thing: skincare based on growth factors and peptides is an investment over time, not a quick fix. With consistent use of the estGen line at home, supported by regular salon visits, your skin has the chance to go through a full adaptation cycle — from the first signs of improved hydration, through visible firmness, to deeper, structural changes that last in the long term.

Frequently Asked Questions

This material is for educational purposes and does not replace a professional consultation or medical advice. Descriptions of the mechanism of action of growth factors and the transferrin complex are declarations by the estGen brand manufacturer. Professional preparations should be selected and used under the supervision of a specialist. Sources: estgen.pl (manufacturer materials) and publications from partner clinics.