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At Dr. Monica Scheel Dermatology, we are always looking for the most advanced, results-driven ingredients to pair with our treatments. Three that come up often in conversations online are growth factors, peptides, and exosomes. But what does that actually mean and are they worth it? Here is what you need to know.
These three ingredients are often grouped together because they all support skin regeneration, but they work in very different ways and have very different histories. Understanding the difference helps you make smarter decisions about your skin.
Peptides: The Originals
Peptides are short chains of amino acids, which are the building blocks of proteins like collagen and elastin. When applied to the skin they send signals to the body to produce more. They are well tolerated by virtually all skin types and have decades of clinical research behind them, making them one of the most trusted categories of ingredients in modern dermatology.
Peptides have the longest history in dermatology of the three. Their story in skincare begins in the 1970s when researchers first began studying the role of amino acid chains in wound healing and tissue repair. By the 1980s and 1990s, scientists had identified specific peptides that could signal the skin to produce more collagen.
The most well known early peptide was Matrixyl, developed in the late 1990s, which became a landmark ingredient in anti-aging skincare because it was one of the first topical ingredients shown to visibly reduce the appearance of fine lines by stimulating collagen synthesis. From there, the field exploded and now there are hundreds of peptides used in medical grade skincare, each with a specific function.
Growth Factors: The Glow Up
Growth factors work because, as we age, our natural production of these proteins slows significantly. Skin takes longer to heal, collagen production declines, and the signals that once kept our skin firm and even-toned become quieter. Applying growth factors topically or infusing them into the skin after a treatment creates micro-channels turns that signal back up. The skin responds by behaving more like it did when it was younger, producing more collagen and elastin and repairing itself more efficiently.
They came into dermatology from a very different world: wound care and surgery. In the 1980s and 1990s, researchers studying how the body heals from injury identified specific proteins that acted as messengers, telling cells to divide, migrate, and repair damaged tissue. These proteins were eventually called growth factors and were found to be essential to the body’s natural healing process.
By the early 2000s, dermatologists began exploring whether these same regenerative proteins could be harnessed to address the more gradual damage caused by aging and sun exposure. The answer was yes. Growth factor serums started appearing in medical grade skincare lines, and providers began pairing them with treatments like microneedling and lasers to accelerate healing and enhance results.
Exosomes: The Future is HERE!
Exosomes are the newest of the three and represent one of the most exciting developments in regenerative medicine in the last decade. Scientists studying how cells communicate with one another discovered in the early 2000s that cells release tiny vesicles, essentially microscopic bubbles, packed with genetic information, proteins, and growth factors. These vesicles, called exosomes, travel between cells and deliver instructions that trigger repair, regeneration, and immune response.
Researchers initially focused on exosomes in the context of cancer research and organ regeneration, but by the 2010s, the dermatology world began to recognize their potential for skin rejuvenation. Early clinical studies showed that exosomes derived from stem cells could dramatically accelerate wound healing, reduce inflammation, and stimulate collagen production at a level that surpassed traditional growth factor serums.
What makes exosomes so remarkable is the sheer volume of information they carry. A single exosome contains thousands of growth factors, peptides, and genetic signals all working together in a coordinated way. This is fundamentally different from a serum that delivers one or two active ingredients. Exosomes essentially deliver a complete regenerative package directly into the skin.
When paired with microneedling, which creates micro-channels that allow ingredients to penetrate far deeper than they could on the surface alone, exosomes trigger a powerful and accelerated healing response.
Patients typically notice faster recovery, more significant improvements in skin texture and tone, and longer lasting results compared to microneedling alone.
Peptides are your reliable drip coffee, growth factors are your first espresso, and exosomes are the single origin pour over that ruined all other coffee for you.
Wait, I think I can come up with a better analogy because they are different:
Peptides are the Nilla Wafer, growth factors are the pudding, and exosomes are the banana pudding that brings it all together and makes you wonder why anyone eats them separately.
Anyway, add on exosomes to your lasers and microneedling if you want to level it up. (I have to go to lunch with my mom so I can get some banana pudding!)
Have questions about how to build your routine or which products are right for your skin? Email me anytime at mmahoney@drmonicascheel.com or call my direct line at (808) 666-2078.
Mahalo for reading — here is to happy, healthy, glowing skin.