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77 78 79 <link rel="icon" type="image/png" sizes="32x32" href="../assets/favicon-32.png" /> 80 <link rel="apple-touch-icon" sizes="180x180" href="../assets/favicon-180.png" /> 81 82 <link rel="stylesheet" href="../styles/colors_and_type.css" /> 83 <link rel="stylesheet" href="blog.css" /> 84</head> 85<body class="bl-page"> 86 <header class="bl-header"> 87 <a class='bl-header__logo' href='/'><img src="../assets/core-logo-white.png" alt="Core Biogenesis" loading="lazy" decoding="async" /></a> 88 <nav class="bl-header__nav" aria-label="Primary"> 89 <a href='/#platform'>Platform</a> 90 <a href='/#pipeline'>Pipeline</a> 91 <a href='/#studies'>Studies</a> 92 <a href='/#about'>About</a> 93 <a aria-current='page' href='/blog/'>Insights</a> 94 </nav> 95 <a class='bl-header__cta' href='/#contact'>Contact</a><button type="button" class="bl-header__burger" aria-label="Open menu" aria-expanded="false" onclick="(function(b){var open=b.getAttribute('aria-expanded')==='true';b.setAttribute('aria-expanded',!open);b.setAttribute('aria-label',!open?'Close menu':'Open menu');document.getElementById('bl-mobile-menu').setAttribute('data-open',!open);document.body.style.overflow=!open?'hidden':'';})(this)"><span></span><span></span><span></span></button></header><div class="bl-mobile-menu" id="bl-mobile-menu" data-open="false" onclick="(function(){var b=document.querySelector('.bl-header__burger');b.setAttribute('aria-expanded','false');b.setAttribute('aria-label','Open menu');document.getElementById('bl-mobile-menu').setAttribute('data-open','false');document.body.style.overflow='';})()"><nav onclick="event.stopPropagation()"><a href='/#platform'>Platform</a><a href='/#pipeline'>Pipeline</a><a href='/#studies'>Studies</a><a href='/#about'>About</a><a href='/blog/'>Insights</a><a class='bl-mobile-menu__cta' href='/#contact'>Contact â</a></nav></div> 96 97 <main class="bl-main"> 98 <article class="bl-article"> 99 <div class="bl-container bl-container--narrow"> 100 <div class="bl-article__breadcrumb"> 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 2â4 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>4â12 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>2â4 weeks</td><td>4â12 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 â 2%</td><td>0.5 â 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 â 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 â</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> 337 </article> 338 </main> 339 340 <footer class="bl-footer"> 341 <div class="bl-footer__inner"> 342 <div class="bl-footer__top"> 343 <div class="bl-footer__brand"> 344 <a href='/'><img src="../assets/core-logo-white.png" alt="Core Biogenesis" loading="lazy" decoding="async" /></a> 345 </div> 346 <nav class="bl-footer__nav"> 347 <a href='/#platform'>Platform</a> 348 <a href='/#pipeline'>Pipeline</a> 349 <a href='/#studies'>Studies</a> 350 <a href='/#about'>About</a><a href='/blog/'>Insights</a> 351 <a href='/#contact'>Contact</a> 352 </nav> 353 </div> 354 <div class="bl-footer__legal">© 2026 Core Biogenesis SAS · Strasbourg, France</div> 355 </div> 356 </footer> 357</body> 358</html>
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