SkinScience 101 with Dr. Adrienne Denese, MD PhD
"Knowledge is the first step to your most beautiful skin. Every Wednesday, I’m opening my lab notes to share a new "class" on the clinical science behind skincare. Consider this your personal library of skin education - designed to help you look past the marketing and understand the real biology of aging." ~ Dr. Denese
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Tiny ingredients. Big skincare conversation.
If you've been paying attention to skincare lately, you've probably noticed one word appearing again and again:
PEPTIDES.
But what exactly are they—and why have they become such an important part of modern anti-aging skincare?
FIRST, WHAT IS A PEPTIDE?
Peptides are short chains of amino acids.
Amino acids are the building blocks of proteins—including proteins such as collagen and elastin that are important components of our skin.
But here's where peptide science gets interesting:
Not all peptides are the same.
Different peptides have different structures and can be incorporated into skincare formulas for different purposes.
Think of them less as one single ingredient and more as an entire family of skincare technologies.
MEET THE PEPTIDE FAMILY
SIGNAL PEPTIDES
Think of these as messengers.
Certain signal peptides have been studied for their interaction with pathways associated with collagen and other components of the skin's extracellular matrix.
You may see names such as Tripeptide-1 and various palmitoyl peptides on sophisticated skincare ingredient lists.
PALMITOYL PEPTIDES
That long word actually has a purpose.
Attaching a fatty-acid chain such as palmitoyl to a peptide can change properties such as its affinity for the skin, which is why palmitoylated peptides have become common in modern cosmetic formulations.
Look closely at anti-aging ingredient lists and you'll often find names beginning with:
Palmitoyl Tripeptide...
Palmitoyl Tetrapeptide...
Those aren't all the same ingredient.
They're different members of a much larger peptide family.
SOOTHING PEPTIDES
Not every peptide story is about wrinkles.
Certain peptides are also investigated and formulated for their skin-soothing and conditioning properties, expanding the role peptides can play in an advanced skincare routine.
WHY USE MORE THAN ONE TYPE OF PEPTIDE?
Because different peptides can have different functions.
It's a little like building a skincare team:
Different players. Different jobs. One goal—better-looking skin.
And that's why the most interesting question isn't simply:
“Does my skincare contain peptides?”
It's:
“WHICH peptides does it contain?”
And perhaps even more importantly...
What happens when sophisticated peptide technologies are brought together in one formula?
You'll find out very soon.
SOMETHING POWERFUL IS COMING THIS WEEKEND.
Stay tuned.