# Refillable Color Cosmetics: Mechanism Formats, Retention Torque, and Insertion Life
TL;DR — In color cosmetics, the mechanism is the product. Verified lipstick mechanisms in the program come in Ø12.1 mm and Ø12.7 mm formats, in plastic, aluminum, and aluminum-magnet constructions. Retention and repeated-insertion performance are verified through torque and drop testing. Refillable structures and magnetic closures are design directions assessed per project — the catalog record verifies the mechanisms themselves.
Why: The Mechanism Is the Product
A lipstick is bought for the shade and re-bought for the mechanism: smooth raise, solid retention, no wobble, no fall-out. A compact is judged by hinge feel and closure confidence. When refillability enters the design, the mechanism becomes the *permanent* part of the pack — every refill cycle re-tests it.
- Retention failure = bullet falls out on transit or in the handbag;
- Raise failure = the mechanism strips, spins, or drops the bullet;
- Refill life = how many insert/remove cycles the cup and rails survive before play develops.
How: Reading the Verified Mechanism Formats
3.1 Lipstick mechanisms
| Format | Verified constructions |
|---|---|
| Ø12.7 mm | Plastic, aluminum, aluminum-magnet |
Magnet-assisted mechanisms add a detent stage at fully-raised or closed position — an engineering choice that changes torque feel, not shade chemistry.
<pre class="language-mermaid"><code>flowchart LR
A[Tube body] –> B[Cup / base<br/>grips the bullet]
B –> C[Rotary mechanism<br/>Ø12.1 / Ø12.7 mm]
C –> D{Plastic / aluminum / magnet}
D –> E[Raise-lower cycle]
E –> F[Torque & drop verification]
</code></pre>
3.2 Compact structures
Compact cases in the range hold single or multi-pan layouts — verified pan capacities include 1.7 ml to 20 ml, with multi-pan formats (e.g. 0.9 ml × 9) recorded. Hinge and closure behavior is a project-pairing decision between case structure and closure hardware.
What: The Verification Hooks
| Failure class | Verification | Program |
|---|---|---|
| Transit damage | Drop testing | Quality program |
| Long-run mechanism play | Pump life-cycle-style cycling (configured per mechanism) | Quality program |
| Decoration on mechanism parts | Adhesion testing | Quality program |
All capability-level, configured against project specifications.
Refillable & magnetic closures — the honest boundary
- Refillable: a refillable lipstick/compact is an architectural option built on replaceable cups, cartridges, or pans. The catalog's refillable record currently covers airless bottles, not lipstick/compact formats — refill structures for color cosmetics are therefore evaluated per project, not asserted as existing catalog facts.
- Magnetic closures: magnet-assisted lipstick mechanisms are represented in verified attribute records; magnetic compact closures are a design direction for the project team to specify and validate.
Gotchas
- Mechanism formats are verified; refillable is not (yet). Ø12.1/Ø12.7 formats and their material variants are the catalog record; refill claims need a project record.
- Torque feel is a spec, not a vibe. Retention torque and raise torque are both measurable; set them, test them, lock them.
- Insertion life is cycling data. Refillable designs should quantify insert/remove cycles before launch — a design can pass one cycle and fail at fifty.
- Magnet ≠ magic. Magnet detents shift the torque curve; verify torque at BOTH detent positions.
- Multi-pan compacts multiply hinge load. Larger pan counts add hinge stress — drop and torque testing scale with structure.
Related Resources
- Categories: Lipsticks · Compacts
- Quality & Testing Capabilities — torque, drop
- Customization — mechanism configuration per project
- Related insight: The 12-Test Lab Matrix