DERMATEST
VERTICAL FELLOWS Liquid Chalk, 250 ml
A 250 ml liquid chalk published with a named dermatological patch test across several skin types under medical supervision, rated "very good".
What the maker publishes
- 250 ml
- DERMATEST “very good”: the maker states the product was assessed by
epicutaneous (patch) testing across various skin types, under specialist
dermatological supervision and according to international guidelines, that
no relevant skin reactions occurred after application, that it is
tolerated “very good” from a clinical-dermatological point of view, and that
it may therefore be declared dermatologically tested
- Easier to dose than powder, because it goes where it is applied — the
palms and fingers
- Dries quickly on the skin, saving time between sets
- Less dust than conventional chalk, which the maker links to air
quality in gyms and climbing halls and to breathing difficulties
The only named test on this shelf
Two listings in this family claim a test. One says “laboratory-tested formula”
and names nothing.
This one names the institute (DERMATEST), the method (epicutaneous patch
testing), the population (various skin types), the supervision
(specialist dermatological), the framework (international guidelines)
and the result (no relevant skin reactions; “very good”).
That is the difference between a claim and a citation.
This page reports it as the maker published it. This site tests nothing and
verifies no test claim — but a reader can tell these two listings apart, and
that is what naming a source is for.
What the test does not cover
Grip.
A dermatological assessment says the product is unlikely to irritate skin. It
says nothing about whether it holds a bar better than the other six bottles
here, and the listing does not claim otherwise.
The air quality argument
Not mess — breathing.
Every listing on this shelf mentions dust. Five of them frame it as a cleaning
problem, or as what gets a product banned from a gym.
This one frames it as what people in the room inhale over a session. It is a
different argument about the same fact, and it is the only listing that makes
it.
Left off the listing
The composition — no carbonate content, no solvent, no alcohol statement.
That is the notable gap on the product whose headline claim is about skin:
what the skin is tolerating is not itemised.
The drying time as a figure.
The seal on the bottle and the box
Both carry the same badge: DERMATEST, SEHR GUT, dated 2023, with
dermatest-garantie.de under it.
An institute and a rating, then, printed twice on the packaging — and an
ingredient list still absent. A dermatological rating is about tolerance, not
about what is in the bottle, and the two are easy to confuse when one of them
is a seal and the other is a blank. Both are set down exactly as found. This
site runs no test and confirms none.
Availability
About 13 € on the German Amazon store, on the one reading this page rests on.
The British Amazon store carries it too, priced in local currency — which the euro range above leaves out on purpose.
The French, Italian and Spanish Amazon stores were asking more than 1.6× the cheapest country. A gap that wide normally means stock shipped in rather than a seller on the ground, so those figures sit outside the range above.
The American Amazon store returned nothing at all, so the buy button there opens a search rather than an empty page.
These figures are what Keepa returned on the day this page was last written. Stock and prices move without notice.
Prices quoted in this text were read on 20 September 2026. The live price is at the top of the page.
