Polynucleotides and skinboosters order on different rhythms

Nothing about the two products flags the difference to whoever is ordering. From a purchasing point of view the two look near identical: comparable pack sizes, comparable price bands, overlapping patient groups, adjacent rows in the catalogue. The difference is not visible on arrival. It sits in how a course is structured, and therefore in how many units leave the fridge for every patient you start.

It does not help that wholesale catalogues, including ours at /store/mesotherapy, tend to shelve the two categories together. That is a reasonable way to organise a product list and a poor way to organise a reorder point.

Two categories, two mechanisms

Skinboosters are usually hyaluronic acid based. The category is built around hydration and skin quality rather than volume or structural lift — product is placed into the skin rather than used to project a contour. Formulations vary considerably between manufacturers, as do the claims each one is permitted to make, so the specifics belong in the IFU rather than in an article.

Polynucleotides start from different material. Products in the category are generally described as purified DNA fragments, commonly of fish origin, and are positioned around the skin's own repair activity rather than around immediate hydration. Whether a particular product describes itself that way, and on what basis, is something to read off that manufacturer's own documentation before you repeat it to anyone.

That is as far as it is honest to go without naming products. The commercial consequence is the part that matters here: because the two categories work through different routes, manufacturers set different course structures for them. Session counts and intervals do not transfer between the categories, and they do not reliably transfer between brands inside the same category either.

A course is the unit of demand, not a syringe

When a clinic starts a patient on a course-based product it has effectively committed to every session in that course, including the sessions that will be dispensed from stock you have not yet ordered. The syringe used today is a record. The course started today is a liability against next month's shelf.

So the reorder question is not how many units went out last month. It is how many courses were started, how many sessions each of those courses still owes, and when those sessions fall in the diary. Two products with identical monthly usage can imply completely different purchase orders — one running a compressed course with short intervals, the other spread across a longer window.

What to pin down before you set a reorder level

Memory is the wrong place to keep any of this. For each product you carry, get these on paper and keep them next to the stock line rather than in the head of whoever usually places the order.

• The manufacturer's stated course structure — number of sessions and the interval between them — taken from the IFU or the manufacturer's professional materials, not from a rep's verbal summary.
• Whether there is a separate maintenance schedule after the initial course, and whether maintenance draws on the same pack or a different presentation.
• Pack contents per unit: how many syringes or vials are in a pack, and whether anything in the pack is single-use per session.
• Storage and handling conditions as written on the IFU for each product, and whether the two categories can in fact share the same shelf or fridge zone in your clinic.
• The remaining dating you will actually receive on a given order, not the full shelf life printed on the box. Ask your supplier to confirm the expiry window before the order goes in.
• Whether a bulk tier saves enough to justify the dating risk at your current run rate, calculated against courses started rather than against last month's usage.

The two failures do not cost the same

Running short on the faster-consuming category is the loud failure. A patient is booked for the next session in a course, the stock is not there, and you are choosing between delaying them and substituting. Substituting between categories part-way through a course is a clinical decision. A stockout is a poor reason to raise it.

Over-ordering the slower one is the quiet failure. Nothing breaks. The stock simply sits there absorbing its own dating. Wholesale pricing steps at fixed quantities, which makes it easy to buy up a tier on a product whose real consumption is spread across a longer period than the remaining shelf life. The discount is real. So is the write-off, and it usually shows up on a different month's numbers than the saving did.

Separate them on paper before you separate them on the shelf

The fix is administrative. Give each category its own stock line, its own reorder point and its own review date. Track courses started alongside units dispensed. Record the manufacturer's course structure against each product so the person ordering on a Thursday afternoon does not have to reconstruct it. If two products genuinely behave the same way on your run rate, you will find that out from the numbers rather than assuming it from the packaging.

The categories are already distinct on the manufacturer's side. They collapse into one another somewhere between the delivery note and the stock sheet, usually because they arrived on the same pallet and looked alike. Pulling them apart again is mostly a matter of writing down what each one actually costs you in stock per patient, and then ordering against that number instead of against the shelf.