Skincare has a new favourite ingredient every few months. One day it’s peptides. Then PDRN. Then exosomes. Suddenly every serum promises skin regeneration, repair or “glass skin.”
But before adding the latest trending ingredient to your routine, it helps to understand what it actually is.
Because new doesn't automatically mean better and interesting science doesn't automatically mean proven skincare.
PDRN: what is it?
PDRN, or polydeoxyribonucleotide, refers to DNA-derived fragments that have been studied for their biological and tissue-repair applications, particularly in medical settings.
Its growing popularity in skincare comes from research around skin regeneration and wound healing. But context matters: evidence from medical or injectable applications cannot automatically be translated into claims about a topical cosmetic serum.
So when you see PDRN skincare, look beyond the ingredient name. Ask about its source, concentration, formulation and the evidence behind the finished product.
Exosomes: more complicated than the buzzword
Exosomes are tiny extracellular vesicles involved in cell-to-cell communication. They have attracted significant scientific interest because they can carry biological molecules between cells.
That's fascinating science. But topical cosmetic exosome products are a different question.
The evidence, source, manufacturing process and regulatory context matter enormously. “Contains exosomes” alone tells you very little about what a finished skincare product can actually do.
Peptides: less flashy, more established
Peptides are short chains of amino acids. Different peptides have different functions, and some have been studied for supporting the appearance of skin firmness, texture and signs of ageing.
Unlike many newer trends, peptides have been part of cosmetic formulation for years.
For example, Nerah Skin Kudzu Restoring Serum contains Matrixyl 3000 alongside niacinamide and other ingredients.
So, which trend is worth knowing?
All three are worth understanding. None deserves a free pass simply because it's trending.
Our approach has been very simple, to ingredients: look past the buzzword, understand the science, and judge the finished formula not the marketing headline.
Explore our TheLab page for more ingredient education without the hype.
