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Deodorant
All Containers›Shop by use case›Deodorant›The four formats›The stick, and the missing tubeShop all deodorant →
The four formats

The stick, and the missing tube

By Dwight Davis, Founder

Updated

On this page8
The shelf for this format does not contain the format, and the catalog does, elsewhere.

What the archetype says

The process note for the deodorant stick reads: twist-up tube, and the mechanism tolerance is the whole spec. That is an accurate description of the craft and it describes a container the derived shelf does not hold.

What the derived shelf actually is

Thirteen containers, every one polypropylene, and every one exactly 59.147 mL. Seven double wall jars, five single wall and one thick wall. No tubes, and no mechanism of any kind.

Which is not useless

A 2 oz PP jar is precisely the container the natural deodorant cream market uses, applied with fingers. So the shelf serves a real product well; it just is not the product the note describes.

The tubes do exist in the catalog

Under Tubes, Deodorant Tubes: a 30 mL clear AS deodorant container, a 2.2 oz natural PP deodorant container at about 65 mL, a 75 mL white plastic deodorant container, and a natural PP deodorant lid to go with them.

Three containers and a lid

Which is a narrow choice and an honest one. If your product is a twist-up stick, those are what we have, and they are not placed on this shelf by the derivation that built it.

Mechanism tolerance is the real spec

The note is right about that. A twist-up has a screw, an elevator and a tube wall, and a formula that is too hard binds while one that is too soft slumps past the elevator. That is a fit problem between your base and the specific mechanism.

So test the actual tube with the actual formula

Filled warm, set, then twisted up and down repeatedly over weeks. Every failure in a twist-up is a mechanical one that only appears in use, and no datasheet substitutes for a filled sample in a drawer.

References

21 CFR 350.50, Labeling of antiperspirant drug products. Paragraph (a) requires the product to be identified as an antiperspirant; (b)(1) gives the Uses statement as a choice of one of three verbs and one of five nouns; (b)(3) and (b)(4) tie duration and "extra effective" claims to 20 percent and 30 percent sweat reduction; (c) sets four verbatim warnings; (d) sets the direction "apply to underarms only". law.cornell.edu
Written from the federal monograph, not from a formulation bench. Whether a given product is a cosmetic or a drug turns on its ingredients and its claims, and that is a determination with consequences; nothing here substitutes for getting it right for a specific formula and label.