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101          <a href='/'>Home</a> · <a href='/blog/'>Insights</a> · Growth factors
102        </div>
103        <header>
104          <h1>EGF vs. FGF-2 in skincare: <em>which growth factor does what?</em></h1>
105          <div class="bl-article__meta">
106            <span>By <strong>Core Biogenesis</strong></span>
107            <span>Last updated <strong>26 May 2026</strong></span>
108            <span>~ <strong>8 min read</strong></span>
109          </div>
110        </header>
111
112        <div class="bl-direct-answer">
113          <p>
114            EGF (epidermal growth factor) signals keratinocytes in the epidermis,
115            driving faster turnover, smoother surface, and stronger barrier.
116            FGF-2 (fibroblast growth factor 2) signals fibroblasts in the dermis,
117            driving collagen production, firmness, and wrinkle reduction. They
118            target different layers of the skin and are most effective together.
119          </p>
120        </div>
121
122        <div class="bl-content">
123          <p>
124            Recombinant growth factors are some of the most studied bioactive
125            molecules in topical skincare, but they are often discussed as a
126            single category. They are not. EGF and FGF-2 are two distinct
127            proteins, acting on two different cell types, and producing two
128            different, though complementary, clinical results.
129          </p>
130          <p>
131            This article breaks down the biology, the published clinical
132            evidence, and the practical formulation rules for choosing between
133            EGF, FGF-2, or both.
134          </p>
135
136          <h2 id="what-is-egf">What does EGF do in skin? <a class="bl-anchor" href="#what-is-egf">#</a></h2>
137          <p>
138            EGF binds the EGF receptor on <strong>keratinocytes</strong>, the
139            primary cells of the epidermis. It accelerates their division and
140            migration. The downstream effects on skin are concentrated in the
141            upper layers:
142          </p>
143          <ul>
144            <li>Faster epidermal cell renewal</li>
145            <li>Improved barrier function (reduced TEWL)</li>
146            <li>Smoother surface texture and reduced micro-roughness</li>
147            <li>Faster recovery after procedures such as microneedling, laser, or peels</li>
148          </ul>
149          <p>
150            Because the epidermis turns over in roughly 28 days, EGF-driven
151            improvements typically show up <strong>within 2–4 weeks</strong> of
152            consistent use.
153          </p>
154
155          <h2 id="what-is-fgf2">What does FGF-2 do in skin? <a class="bl-anchor" href="#what-is-fgf2">#</a></h2>
156          <p>
157            FGF-2 (also called basic FGF, or bFGF) binds receptors on
158            <strong>fibroblasts</strong>, the collagen- and elastin-producing
159            cells of the dermis. It stimulates fibroblast proliferation and
160            extracellular matrix synthesis. The downstream effects are deeper
161            and structural:
162          </p>
163          <ul>
164            <li>Increased Type 1 collagen production</li>
165            <li>Improved firmness and elasticity</li>
166            <li>Reduction in wrinkle depth and length</li>
167            <li>Better dermal remodeling after injury</li>
168          </ul>
169          <p>
170            Dermal remodeling is slower than epidermal renewal, meaningful
171            structural change takes <strong>4–12 weeks</strong>.
172          </p>
173
174          <h2 id="comparison">How do EGF and FGF-2 compare side by side? <a class="bl-anchor" href="#comparison">#</a></h2>
175          <div class="bl-table-wrap">
176            <table class="bl-table">
177              <thead>
178                <tr>
179                  <th>Dimension</th>
180                  <th>EGF</th>
181                  <th>FGF-2</th>
182                </tr>
183              </thead>
184              <tbody>
185                <tr><td>Primary target cell</td><td>Keratinocytes</td><td>Fibroblasts</td></tr>
186                <tr><td>Skin layer affected</td><td>Epidermis</td><td>Dermis</td></tr>
187                <tr><td>Visible benefit</td><td>Barrier, texture, brightness</td><td>Firmness, wrinkle depth, elasticity</td></tr>
188                <tr><td>Speed of result</td><td>2–4 weeks</td><td>4–12 weeks</td></tr>
189                <tr><td>Best use case</td><td>Recovery, barrier repair</td><td>Anti-aging, dermal renewal</td></tr>
190                <tr><td>Typical formulation %</td><td>0.5 – 2%</td><td>0.5 – 2%</td></tr>
191                <tr><td>Molecular weight</td><td>~6 kDa</td><td>~17 kDa</td></tr>
192                <tr><td>Delivery challenge</td><td>Moderate, small but unstable</td><td>Hard, larger protein</td></tr>
193              </tbody>
194            </table>
195          </div>
196
197          <h2 id="combination">Should you combine EGF and FGF-2? <a class="bl-anchor" href="#combination">#</a></h2>
198          <p>
199            Yes, when the formulation goal calls for both surface and structural
200            improvement. EGF and FGF-2 act on different cell types via different
201            receptors, so there is no mechanistic conflict. The combination
202            covers both layers of the skin and tends to produce broader
203            clinical improvement than either ingredient alone.
204          </p>
205          <p>
206            In <a href='/#studies'>our own head-to-head study</a>,
207            a formulation pairing 1% Peauvita™ (recombinant EGF-oleosome
208            fusion) with 1% Peauforia™ (recombinant FGF-2-oleosome fusion)
209            outperformed 0.3% retinol, the EU regulatory maximum, across
210            wrinkle depth, wrinkle length, skin smoothness, and brightness, at
211            day 30.
212          </p>
213
214          <h2 id="delivery">Why delivery matters as much as the molecule <a class="bl-anchor" href="#delivery">#</a></h2>
215          <p>
216            Both EGF and FGF-2 are large proteins relative to most cosmetic
217            ingredients. They do not cross the stratum corneum well on their
218            own. A formula listing EGF or FGF-2 on the INCI list is not the
219            same as a formula <em>delivering</em> functional EGF or FGF-2 to
220            the right cells.
221          </p>
222          <p>
223            That is why carrier systems matter. We grow recombinant EGF and
224            FGF-2 fused to the surface of <a href='/blog/oleosomes-skin-penetration'>oleosomes</a>
225           , native plant lipid droplets, which provides both stabilization
226            and biomimetic delivery into the skin. Other valid approaches
227            include liposomes, peptide-tagged variants, and microemulsions; the
228            principle is the same: large proteins need a carrier to work.
229          </p>
230
231          <h2 id="fit">Best for / Not ideal for <a class="bl-anchor" href="#fit">#</a></h2>
232          <div class="bl-fit-grid">
233            <div class="bl-fit-card bl-fit-card--good">
234              <div class="bl-fit-card__title">Best for</div>
235              <ul>
236                <li>Anti-aging serums (FGF-2 especially)</li>
237                <li>Post-procedure recovery (EGF especially)</li>
238                <li>Barrier repair after compromise (EGF)</li>
239                <li>Premium anti-wrinkle creams (combined EGF + FGF-2)</li>
240                <li>Sensitive-skin alternatives to retinol</li>
241              </ul>
242            </div>
243            <div class="bl-fit-card bl-fit-card--bad">
244              <div class="bl-fit-card__title">Not ideal for</div>
245              <ul>
246                <li>Simple cleansers or rinse-off products</li>
247                <li>Pure hydration formulas (no benefit over hyaluronic acid)</li>
248                <li>Acne or sebum-control formulas (different mechanism needed)</li>
249                <li>Tinted SPF or color cosmetics (cost not justified)</li>
250                <li>Formulas where the active is not protected from degradation</li>
251              </ul>
252            </div>
253          </div>
254
255          <h2 id="faq">Frequently asked questions <a class="bl-anchor" href="#faq">#</a></h2>
256          <div class="bl-faq">
257            <details>
258              <summary>Can you combine EGF and FGF-2 in the same formula?</summary>
259              <p>
260                Yes. Because they act on different cell types, keratinocytes for
261                EGF, fibroblasts for FGF-2, they are mechanistically
262                complementary. Several products on the market pair them, and
263                our own peauvita™ and peauforia™ are used together at 1% + 1%
264                in published clinical work.
265              </p>
266            </details>
267            <details>
268              <summary>Is EGF or FGF-2 stronger?</summary>
269              <p>
270                Neither is universally stronger. EGF delivers faster visible
271                barrier and texture improvements because the epidermis turns
272                over in ~28 days. FGF-2 drives slower-developing but deeper
273                changes in firmness and wrinkle depth because dermal remodeling
274                takes weeks to months.
275              </p>
276            </details>
277            <details>
278              <summary>Are recombinant growth factors safe on the skin?</summary>
279              <p>
280                Recombinant EGF and FGF-2 have a strong dermatological safety
281                record when produced at cosmetic grade and used at typical
282                formulation concentrations (0.5 – 2%). Both have been HRIPT and
283                patch tested as non-irritant and non-sensitizer in independent
284                dermatologist-supervised studies.
285              </p>
286            </details>
287            <details>
288              <summary>Do EGF and FGF-2 work in over-the-counter skincare?</summary>
289              <p>
290                They work if they reach living cells. The limiting factor is
291                delivery: free recombinant proteins are large molecules that do
292                not cross the stratum corneum well on their own. Carrier
293                systems such as oleosomes, liposomes, or covalent peptide tags
294                materially improve bioavailability.
295              </p>
296            </details>
297            <details>
298              <summary>Should every skincare formula contain growth factors?</summary>
299              <p>
300                No. Growth factors are most useful for repair, recovery,
301                anti-aging, and post-procedure formulas. They add limited
302                value to cleansers, basic moisturizers, or formulas aimed at
303                oil control, acne, or pure hydration.
304              </p>
305            </details>
306          </div>
307
308          <p>
309            For more on the platform behind these actives, see our
310            <a href='/#platform'>technology overview</a>, the
311            <a href='/#pipeline'>launched products</a>, or the
312            <a href='/#studies'>full clinical evidence summary</a>.
313          </p>
314        </div>
315
316        <aside class="bl-cta">
317          <h3>Need a sample, spec sheet, or clinical report?</h3>
318          <p>
319            Peauvita™ (recombinant EGF-oleosome fusion) and Peauforia™
320            (recombinant FGF-2-oleosome fusion) are available now for
321            formulators, beauty brands, and CDMOs.
322          </p>
323          <div class="bl-cta__row">
324            <a class='bl-button bl-button--primary' href='/#contact'>Request formulation data →</a>
325            <a class='bl-button bl-button--ghost' href='/#pipeline'>View the products</a>
326          </div>
327        </aside>
328
329        <section class="bl-related">
330          <h3>Related insights</h3>
331          <ul>
332            <li><a href='/blog/growth-factors-vs-retinol'><strong>Growth factors vs. retinol</strong><span>Head-to-head: which one actually works better?</span></a></li>
333            <li><a href='/blog/oleosomes-skin-penetration'><strong>Oleosomes and skin penetration</strong><span>How a native plant carrier delivers active proteins.</span></a></li>
334          </ul>
335        </section>
336      </div>
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