Oulete · Buyer reference
Cosmetic Packaging Glossary
Understand the bottle, pump and specification terms behind your next packaging order.
42 practical terms for cosmetic companies, contract fillers and packaging wholesalers. Compare meanings, spot common mix-ups and turn a general enquiry into a clearer brief.
Published 30 October 2026 · General selection guidance. Final drawings, quotations and agreed test plans define your particular order.
42 terms · Browse by topic or jump to a starting letter below.
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See the parts before choosing the pack
Three simplified, original structure sketches. Numbers identify the parts listed below each drawing.
Piston-type airless
Explore airless bottles
Conventional lotion pump
Explore lotion pump bottles
Bulb dropper
Explore dropper bottles
Schematic only; not to scale. Internal valves, springs, seals and other details are omitted. Actual constructions vary; an airless pack may use a pouch instead of a piston. Use the selected model drawing for fit and procurement.
Four distinctions worth checking first
Fill volume ≠ brim-full capacity
The intended contents and the empty bottle’s maximum volume answer different questions. Confirm the usable fill with the dispenser installed.
Body height ≠ assembled height
A carton or filling fixture must accommodate the specified complete pack and pump position, not just the bottle body.
Same diameter ≠ approved fit
Check neck finish, sealing geometry, components and tolerances. A matching size label does not replace an assembly trial.
Frosted appearance ≠ tested light barrier
A finish describes appearance. Define and verify light-protection requirements with the formulation team and the actual packaging.
Capacity & dimensions
Assembled height
The overall height of the specified bottle, closure and dispensing components in an identified condition. A raised actuator can differ from a locked one.
For your specification: State whether the pump is locked, unlocked or covered when checking cartons and line clearance.
Body height
The height of the bottle body measured between the reference points on its drawing. It excludes separate dispensing parts unless the drawing states otherwise.
For your specification: Identify the drawing reference points; do not compare it with an assembled-height figure.
Brim-full capacity
The internal volume when a container is filled to its upper rim under stated measurement conditions. Also called overflow capacity.
For your specification: Do not order by brim-full volume alone; obtain the usable fill for your complete assembly.
Headspace
The space remaining above the product in a filled, closed container. The inserted pump, pipette or other components can affect the space available.
For your specification: Agree fill level and assembly condition with your filler rather than using a universal percentage.
Neck finish
The closure interface at the top of a container, including the geometry used to attach and seal the closure. The drawing defines more than a nominal mouth diameter.
For your specification: Check the bottle and closure drawings together, including sealing surfaces and tolerances.
Neck finish code
A designation such as 24/410 that identifies a neck size and finish series in a particular system. It is not a complete drawing or a universal fit guarantee.
For your specification: Matching codes are a starting point; validate the actual closure, seal and assembly.
Nominal fill volume
The stated amount of product intended for the filled pack, such as the volume on its label. It is distinct from the volume of an empty container filled to its rim.
For your specification: Ask the filler to confirm the intended fill and space needed by the closure or dispenser.
Bottle & closure parts
Closure
A component or assembly that closes the container. Depending on the pack, this can include a screw cap, dispensing pump, dropper or another system.
For your specification: Confirm what is included and how the complete closure seals to the bottle.
Dip tube
A tube that carries product from inside a container to a conventional pump or sprayer. Its length and end position depend on the selected bottle and assembly.
For your specification: Confirm the cut length and bottom clearance using the actual pack.
Formula-contact part
Any component that can contact the contents during the intended filling, storage or use of the pack. It can include seals and internal pump parts as well as the bottle.
For your specification: Request a component-level material list rather than inferring materials from the exterior.
Label panel
The area intended for a label or decoration. Its usable dimensions can be smaller than the apparent flat or cylindrical surface.
For your specification: Request artwork limits, orientation and any exclusions near curves or parting lines.
Liner or gasket
A sealing element used at an interface within a closure or dispensing assembly. Its material and compression are part of the complete sealing design.
For your specification: Identify the exact contact material and confirm fit and formula testing.
Overcap
A cover placed over a dispenser or closure for protection or presentation. It is not necessarily the component that seals the contents.
For your specification: Review removal, retention and clearance without assuming it replaces a pump lock or primary seal.
Pipette
The tube in a dropper assembly used to pick up and release liquid. It may be glass or plastic and works with the bulb and closure.
For your specification: Check its length, tip, material and clearance in the filled bottle; markings alone do not prove dose accuracy.
Shoulder
The transition between the main bottle body and its narrower neck. Its shape can affect handling, label placement and the internal space around a dip tube.
For your specification: Use a drawing or physical sample to assess the proposed bottle shape.
Airless & dispensing
Actuator
The part a user presses or operates to activate a pump or sprayer. Its shape and movement affect finger access and the position of the outlet.
For your specification: Review access, actuation force and clearance on the complete pack, especially with a custom outer shell.
Airless packaging
A dispensing system that accommodates product removal through a changing reservoir volume, commonly using a rising piston or collapsing pouch rather than admitting replacement air into the product reservoir.
For your specification: Airless does not by itself establish sterility, zero oxygen exposure or a formula shelf life.
Dropper
An assembly that typically combines a pipette, bulb, closure and sealing components to pick up and release liquid. Constructions vary by model.
For your specification: Approve the complete set; do not assume a dropper delivers a calibrated dose or provides a child-resistant closure.
Piston
A moving component that follows the product as it is dispensed in a piston-type airless container. Other airless systems may use a pouch instead.
For your specification: Confirm which structure the proposed model uses and how it is filled and assembled.
Priming
The initial operations needed to bring a dispenser into normal product delivery. The required strokes depend on the mechanism, fill condition and formula.
For your specification: Agree how priming is measured and the acceptance criterion for the selected assembly.
Pump output
The amount delivered by a pump under defined operating and test conditions, often expressed as volume per full stroke. Partial presses can produce a different result.
For your specification: Specify the formula, stroke, measurement method and acceptable variation; avoid assuming one output for every pump.
Residual product
Product remaining in the packaging after a defined dispensing endpoint. Its measured amount depends on the formula, pack orientation and test method.
For your specification: Agree the endpoint and calculation before comparing evacuation results from different packs.
Materials & recycling
HDPE — High-density polyethylene
A polyethylene material used in bottles and other packaging components. Pigments, additives and the selected grade affect the finished part.
For your specification: Confirm the full specification; a material name or opaque appearance does not quantify a light barrier.
PCR — Post-consumer recycled
Material recovered after use by end users and reprocessed for another manufacturing use. A PCR percentage should identify its component and calculation basis.
For your specification: Request supporting evidence and define color variation; recycled content does not prove whole-pack recyclability.
PET — Polyethylene terephthalate
A polyester used for many rigid packaging containers. Container design, resin grade and processing influence the finished pack.
For your specification: Ask for the actual material specification and validate the intended contents and decoration.
PETG
A glycol-modified copolyester used in some packaging applications. It is a different material designation from PET.
For your specification: Do not substitute PETG for PET without approval; verify the selected grade, contents and local recycling route.
PMMA — Acrylic
Polymethyl methacrylate, a transparent plastic used in some presentation components. An acrylic outer shell need not be the vessel touching the formula.
For your specification: Identify inner and outer components separately before evaluating compatibility.
PP — Polypropylene
A thermoplastic used in many packaging bodies and components. The abbreviation identifies a polymer family, not a particular grade or complete assembly.
For your specification: Confirm the grade and component list; PP alone does not establish compatibility with your formula.
Recyclability
The ability of packaging to be collected, sorted and processed into material for another use within a relevant recycling system. It concerns the whole configuration and target market.
For your specification: Review the bottle, pump, label and decoration together; do not infer a universal claim from a resin code.
Manufacturing & decoration
Blow molding
A family of processes used to form hollow containers by expanding a heated plastic intermediate against a mold. Specific methods differ.
For your specification: Identify the proposed process and part specification instead of treating every plastic bottle as identical.
Frosted finish
A surface appearance that diffuses reflected or transmitted light. Different materials and processes can produce a frosted look.
For your specification: Specify the process and sample appearance; frosting alone is not evidence of UV protection.
Hot stamping
A decoration process that transfers a foil design using heat, pressure and a tool. It is commonly used for metallic accents or lettering.
For your specification: Confirm artwork detail, surface curvature and adhesion on the actual component.
Injection molding
A process that forms a part by injecting material into a mold cavity. The tool and process determine the part geometry and its variation.
For your specification: Confirm which components are molded and use approved drawings and samples for release.
Parting line
A line or witness on a molded part associated with the interface between mold sections. Its position can matter for appearance, labels or component fit.
For your specification: Define acceptable appearance and relevant functional limits on identified samples.
Silk-screen printing
A decoration process that transfers ink through a patterned mesh onto a surface. Artwork, ink, substrate and curing affect the result.
For your specification: Approve the decorated component and agreed adhesion and wear checks; do not assume every geometry is printable.
Vacuum metallization
A process that deposits a thin metal layer onto a surface in a vacuum. The finished decoration can include additional preparation and protective coatings.
For your specification: Distinguish a metallized appearance from a solid-metal component; approve the complete finish system.
Purchasing & approval
Approved sample
An identified physical sample accepted for stated requirements. An appearance approval and a functional approval can have different scopes.
For your specification: Record its revision, approval scope, date and unresolved conditions; retain it with the drawing and artwork.
Bill of materials
The identified list of components and their agreed specifications for a product or assembly. It helps keep purchasing, filling and inspection aligned.
For your specification: Record part references, materials and revisions, including the pump, seals and decorative components.
Compatibility testing
Assessment of the intended formula with the selected packaging under agreed conditions. It examines relevant interaction and performance risks for that combination.
For your specification: Have the responsible formulation and filling teams agree methods, duration and acceptance criteria; a generic resin chart is not final approval.
Lead time
The period allowed for a defined project stage, measured from an agreed starting event. Sampling, artwork approval, production and transport are separate stages.
For your specification: Ask what starts the clock and what is included; a production estimate is not an arrival guarantee.
MOQ — Minimum order quantity
The minimum quantity accepted for a defined order configuration. It can be affected by model, color, artwork, materials and component sourcing.
For your specification: Oulete plastic airless and lotion bottles start at 5,000 pieces; glass and cosmetic soft tubes at 10,000. Confirm other formats and splits separately.
Tooling
Molds, fixtures or other dedicated equipment identified for making or assembling the specified parts. Tooling scope is separate from a finished-unit quotation.
For your specification: Agree ownership, maintenance, change approval and any development charges in writing.
Turn the vocabulary into a packaging brief
Send the intended product, fill volume, bottle or model reference, dispenser requirements, quantity by color, decoration and target date. Add drawing and filling-line constraints if available.
Continue with the relevant product or guide
- Airless packaging options — compare families and complete dispensing assemblies.
- Lotion bottles and pumps — review body dimensions and matched pump requirements.
- Dropper bottles — define the bottle, pipette, bulb and closure together.
- Sample approval checklist — keep the approved drawing, artwork and sample aligned.
Technical references and scope
Definitions are written for cosmetic packaging procurement, with technical terminology checked against the references below. These references do not certify an Oulete model or replace project-specific evidence.
- Cetie packaging glossary — container capacities, closure terminology and related technical references.
- WB Bottle technical library — finish dimensions, bottle terminology and material overviews.
- N.E.W. Plastics bottle terminology — bottle anatomy and decoration areas.
- Richmond: airless dispensing — piston and pouch structures and priming.
- Amcor sustainability glossary — PCR and the market-dependent meaning of recyclability.
Terminology varies across suppliers and standards. Ask for the applicable drawing, measurement conditions and agreed definition when a term affects your order. This glossary is not a certification, compatibility report or manufacturing specification.