Einzelhandel für Kopfhautpflege: Was sich zwischen den Terminen verkauft

27 August 2026 · The Glow Trade

A colourist we supply put nine haircare products on her reception shelf last autumn: two shampoos, two conditioners, a mask, an oil, a heat spray, a tonic and a scalp scrub. By spring one line had been reordered four times and the other eight were still on their first case. The line that sold was the shampoo her stylists pumped onto every client's head at the basin. Nobody had been trained to sell it. It sold because the client had already felt it.

That pattern repeats in almost every salon we look at, and it settles the question of what haircare to sell before any brand catalogue is opened. Retail in a salon follows the service. The products worth stocking are the ones the client experiences in the chair and can keep going at home until the next appointment, which for scalp care means a shampoo, a leave-on tonic and, for some clients, a weekly scaler. Everything else is decoration that ages.

The short version

A 500 ml scalp shampoo at about 10 ml a wash is roughly 50 washes, which is seven weeks for a daily washer and fourteen at every second day, so the bottle empties one to two appointments away and the rebuy has to be sold at the visit before it runs out.
Korea's Ministry of Food and Drug Safety lists "products aiding in alleviating hair loss symptoms" as a functional cosmetic category with a 60 day review, but that Korean status proves nothing in the EU, where Commission Regulation (EU) No 655/2013 of 10 July 2013 requires every claim to rest on adequate and verifiable evidence held by the responsible person.
Korean scalp lines come in sizes that map onto a salon: shampoo at 400 ml (AROMATICA Rosemary Scalp Scaling Shampoo) or 500 ml (Dr.FORHAIR Folligen Original Shampoo), and leave-on tonics at 100 ml dosed at one to two pumps after each wash (AROMATICA Rosemary Root Enhancer), so each product runs out on its own clock.

The basin is the tester, the shelf is only where the money changes hands

A skincare shop has to persuade a stranger to try a product. A salon does not. For the fifteen minutes of a wash and treatment the client has the shampoo on her scalp, smells it, feels whether the tightness or itch she came in with has changed, and hears the stylist name it. That is the entire sales process, and it happens at the basin whether or not you retail anything.

The mistake is to treat retail as a second decision. The stylist uses brand A on the back bar because the rep gave a good deal on the litre, and the shelf carries brand B because it photographs well. The client asks what was used on her hair, is told it is professional only, and buys something at the chemist on the way home. If you retail scalp care, the back bar and the shelf carry the same product in different sizes, and choosing which product that is belongs to the service menu first, which is where adding Korean scalp care to a salon back bar starts.

The handover then costs one sentence at the basin ("this is the scalp shampoo I am using on you, it is on the shelf in the 500 ml") and one at the desk. Anything longer and staff stop doing it by the second week.

Three products move, each on its own clock

Across the salons we see, scalp care retail settles onto the same three items, and it pays to understand why those three and not the other six.

The scalp shampoo. The anchor. It is used in the service, it is used at home every wash, and it is the only product a client will rebuy without being asked. Stock one, in the retail size, and let the back bar run on the same formula. Korean scalp shampoos typically reach European retail in 400 ml and 500 ml packs; a travel size is a nice gesture but does not create a rebuy.

The leave-on tonic. A 100 ml scalp tonic such as the AROMATICA Rosemary Root Enhancer goes on at one to two pumps after each wash and is left in. It has the clearest daily slot of the three, it is applied to the client in the chair after the wash, and it is the product clients most often ask about by name because they can feel it on the scalp. It also travels: a client who will not carry a 500 ml bottle on a work trip will carry the tonic.

The scaler. A scaling shampoo or a pre-wash scalp scaler, used once a week or once a fortnight. It moves for the client who booked a scalp service because her scalp flaked or felt greasy, and it does not move for anyone else. Stock it in small quantity and let the stylist recommend it only after a scalp treatment.

What does not move: the conditioner, because clients already own one and it does not touch the scalp complaint; the mask; the oil; and a second shampoo variant for a scalp type you do not treat. The logic is the one that works on a skincare counter, where three steps with three separate restock dates beat one hero product and a shelf of extras.

The rebuy cycle is arithmetic, and it sizes the order

No brand prints a per-wash dose on a shampoo pack, and we have not found a published figure we would put a name to, so weigh a bottle before and after a week at your own basin and use that number. Until you have it, work with 10 ml a wash for a 500 ml bottle and correct later.

At that dose a 500 ml bottle is about 50 washes. A client who washes daily empties it in about seven weeks; one who washes every second day takes about fourteen. Now lay those against the appointment book. A colour client on a six week cycle who washes daily runs out a week after her visit and buys a replacement at the supermarket, because your shelf is thirty minutes away. A cut client on a ten week cycle who washes every other day still has a third of the bottle at her next appointment and will not buy.

Three consequences follow:

Sell the shampoo at the appointment before it runs out. The stylist asks how often the client washes, does the division, and names the week the bottle will be empty. If that week falls before the next booking, the client goes home with two.
Stock the tonic for clients on longer appointment cycles. At one to two pumps a day a 100 ml bottle is the product most likely to empty in the gap between visits, which is exactly when you want the client thinking about your shelf.
Reorder from the appointment book rather than from the shelf. Four shampoos on the shelf with twelve returning scalp clients booked this month is already a shortage. How many cases that means for a salon with no stockroom is its own calculation.

What the Korean pack says and what your stylist may say

Korean scalp shampoos often carry a line on the Korean pack marking them as a functional cosmetic for alleviating hair loss symptoms. That is a real regulatory category: Korea's Ministry of Food and Drug Safety lists "products aiding in alleviating hair loss symptoms" among functional cosmetics, reviewed by its evaluation institute on a 60 day standard timeline. It is also why the same products arrive with hair loss language in their English retail listings.

None of that transfers. The EU has no functional cosmetic category. Article 2 of Commission Regulation (EU) No 655/2013 makes the responsible person accountable for every claim meeting six common criteria, and the evidential support criterion requires claims, explicit or implicit, to be "supported by adequate and verifiable evidence". A stylist saying "this stops hair loss" while handing over the bottle is an implicit claim on the product, and Article 20(1) of Regulation (EC) No 1223/2009 forbids attributing characteristics a product does not have. A hair loss claim also raises the question of whether the product is a cosmetic at all, and that is a question you do not want asked about your shelf.

Two things to do about it. Ask your supplier for the EU label of the product and check whether the hair loss wording survived onto it; if the EU responsible person dropped it, your staff drop it too. Then train the sentence that is both true and legal, "for a scalp that flakes, itches or feels tight", which is the complaint the client actually walked in with.

The handover card and the rebuy rule

Print this, one per basin and one at the desk. Fill the blanks for your own products once.

SCALP CARE HANDOVER

At the basin, while the product is on the scalp:
"This is the scalp shampoo I am using on you today, [product].
 It is the one on the shelf, in the [400/500] ml."

After the tonic, in the chair:
"[Tonic], one to two pumps on the scalp after every wash, left in.
 The bottle is 100 ml and lasts you about [__] weeks."

At the desk, before payment:
"How often do you wash your hair?"
 Daily            -> 500 ml lasts about 7 weeks
 Every second day -> 500 ml lasts about 14 weeks
 Twice a week     -> 500 ml lasts about 25 weeks
"Your next appointment is in [__] weeks, so this bottle
 runs out [before / after] it."
 Runs out before -> offer two bottles
 Runs out after  -> one bottle, write the run-out week on the card

REBUY RULE
Reorder a product when units on the shelf are fewer than
the scalp clients booked in the next 4 weeks who bought it before.
After 12 weeks on the shelf, drop any product that fewer than
1 in 5 first buyers has bought a second time.

The week figures assume 10 ml a wash. Replace them with your own weighed number after the first week.

Questions buyers ask

Can I sell a client the litre back bar size if she asks for it?

If the pack carries the full EU label, nothing in the cosmetics regulation stops you. It is still usually a mistake: the litre undercuts your retail price per millilitre and stretches the rebuy from weeks to months, taking the client out of the rhythm that brings her back. Sell the 500 ml and keep the litre on the back bar.

How many units should the first order be?

Count the scalp service clients in your book for the next four weeks and buy one shampoo per client, one tonic per two clients, and scalers only for the clients who booked a scalp treatment specifically. Case sizes of six or twelve will round that up; round up on the shampoo and down on everything else. A first order that lasts longer than eight weeks was too big.

What if the client already uses a medicated anti dandruff shampoo from the pharmacy?

Leave it alone. A shampoo sold as a medicinal product is regulated as a medicine, and a stylist is in no position to tell a client to stop something a pharmacist recommended. Offer the tonic alongside it, and keep the conversation about how the scalp feels.