Exosome, NAD, stem cell: three words looked up in the ingredient list

There are two kinds of trend word. One kind has a line in the ingredient list you can point at. The other kind does not, and the whole question becomes what stands in its place.

On the labels we hold, stem cell is the second kind and exosome is mostly the second kind. NAD is the first kind.

That is not an accusation. It is a reading instruction, because a word with no line in the list has to be checked a different way.

Exosome

An exosome is a tiny vesicle that cells release to carry material to other cells. It is a real thing in biology and an active area of research.

Eight products carry exosome in the name in what we hold, and seven of them print no exosome entry in their ingredient lists. The remaining one prints an entry called milk exosome.

What the seven print instead is a plant or ferment extract, or a filtrate. Those are ordinary cosmetic ingredients with ordinary evidence behind them, and there is nothing wrong with them. The gap is between the word and the line.

Exosome Repair Ampoule Plus is one of the seven. Its list runs to thirty nine entries and none of them is an exosome. If the exosome content is the reason to buy it, that reason is not on the label.

A practical note on why this happens. Korean ingredient labelling prints what the ingredient is, using established names. A marketing term does not become one of those names by being used a lot, so a product built around a novel material often lists that material under whatever established name fits.

NAD

NAD is a coenzyme every cell uses. Interest in it comes mostly from work on ageing biology, much of it on what happens when you raise NAD levels inside the body rather than on what happens when you apply something to the face.

Four products carry NAD in the name, and all four print an NAD entry in the list. On a Korean list NAD appears under its established ingredient name, nicotinamide adenine dinucleotide. 16 labels print that entry.

There is a precursor side as well. 18 labels print nicotinamide mononucleotide, a precursor the body converts toward NAD. Bichup Self-Generating NAD Power Ampoule is one of them and also prints NAD itself at 500 parts per million, so on that label the name and the list point in the same direction.

No.9 NAD Bio Lifting Concentrate Essence prints NAD at 50 parts per million and no precursor. Its list runs to a hundred and twenty entries.

What none of this settles is whether applying NAD or a precursor to skin raises anything. That is a much harder claim than the ingredient's presence, and presence is all a label can show you.

Stem cell and growth factor

Across every list we hold, not one prints a stem cell entry, and not one prints a growth factor entry.

Both words still appear in marketing. What sits in the list underneath them is usually a plant cell culture extract or a peptide. A peptide is a short chain of amino acids, sometimes designed to resemble a fragment of a signalling protein, which is a different thing from the protein.

A resemblance in design is not the same as the function of the original. That is the substitution to watch for across this whole group of words.

Why this pattern keeps repeating

The same shape shows up whenever a word arrives from research faster than from regulation.

• The research names a mechanism.
• Marketing borrows the mechanism as a product word.
• The ingredient list keeps using established ingredient names.
• So the mechanism word never reaches the list, and the two texts drift apart on the same package.

We showed the same shape in microbiome on a Korean label, where the word becomes a ferment once you read the list. Retinal is the counterexample, and the contrast is instructive: it is a word with a line in the list, and almost every retinal label prints a level.

What to do with a product like this

• Read the list first and the front second. Find what the word became before you judge the price.
• Ask which line the word refers to. A brand that can answer that in one sentence is telling you something. So is a brand that cannot.
• Treat the rest of the list as the product. If the headline ingredient is not in the list, what you are buying is the base, and the base is knowable.
• Discount the mechanism story by one step. Research on a molecule in a lab is not research on this bottle on your face.

Common questions

Does this mean the product is a scam?

No, and we would not put it that way. These are ordinary formulas with ordinary ingredients, sold under a word that reaches further than the list does. The problem is the pricing of a promise, not the safety of a cream.

Could the exosome be in there but listed under another name?

That is exactly what is happening, and it is the honest reading. The point is that you cannot verify from the package which line it is, and the amount is never given.

Is NMN worth looking for on a label?

It is at least an ingredient that exists on lists and can be found. Whether applying it does what the oral research suggests is a separate and unsettled question, and we would not carry the one over to the other.

What about products naming a specific research institute?

A named source is better than no source, because it can be checked. It is still not a measurement of what is in the bottle. The difference between citing research and having been tested is covered in claims that belong to another product.

Should I avoid these words entirely?

No. Buy the list, not the word. If the base suits your skin and the price is one you would pay for that base, the word on the front costs you nothing.

If you are looking at a product with one of these words on it and cannot tell what the list is offering instead, send us the page. We will read it with you.