Exosomes in skincare: what they are and what to ask a manufacturer
The word “exosomes” now sits on dozens of Korean labels, but it covers very different things. What they actually are, why they matter, and the four questions to ask a factory before you order.
Over the last three years “exosomes” has become the headline word on Korean cosmetic labels. The trouble is that the same word covers products of very different quality, and the buyer at the other end of the deal sees only a line in the ingredient list.
What exosomes are, plainly
Exosomes are tiny vesicles that cells use to talk to each other. Inside them sit signalling molecules. In cosmetics they are used as transport: they carry an active into the skin cell and protect it from breaking down on the way.
That gives the practical point. An exosome does not “work” on its own — it raises the precision and survival of whatever active is loaded into it. So the question “does it contain exosomes” is far less useful than “which ones, and carrying what”.
Plant-derived, not human
Korean cosmetics mostly use plant and mushroom exosomes: from centella, from ginseng, from fungi. They are usually easier to standardise and to take through registration than exosomes of animal or human origin, which regulators treat far more strictly.
If a supplier does not name the source outright, that is the first thing to press on. The source decides the composition, the registration, and what you are allowed to print on the packaging in your own country.
Four questions before ordering
First: what the exosomes are derived from and who produces them — the factory itself or a raw material partner. Second: the concentration in the finished product, not in the raw material; these are different figures and presentations often blur them.
Third: how stability is evidenced — exosomes are sensitive to temperature and pH, and the shelf life of a batch follows from that. Fourth: which documents come with the goods — test reports, INCI, certificate of analysis.
What a good answer looks like
Korean company BIOPT, for instance, runs two lines on different raw materials: centella exosomes in the calming Red Calming series and Sparassis crispa exosomes in the anti-ageing EXO REJUVA. The raw material side is shared with biomaterial producer OptBio, and a patent application has been filed on a compound from the mushroom.
It is a useful example of what a clear answer looks like: the material is named, the line is named, and the party responsible for the material is named. Everything else — figures, protocols, documents — is requested at the deal stage, and it should always be requested.