ZJ Pack 20-410 PP Slim Serum & Treatment Pump, 0.23cc Dosage with External Spring & Overcap

What this packaging is

Precision dosing with zero metal-to-formula contact — that's the defining advantage of this 20-410 PP Slim Serum & Treatment Pump. The external spring mechanism sits outside the pump body entirely, keeping your liquid formula away from any metal components — a critical detail for sensitive serums, eye creams, and water-based foundations. Built from PP with a glossy black finish across the actuator, shoulder, and collar, this pump delivers a refined, consistent look at a 0.23cc dose per actuation. The slim 20-410 neck format fits a wide range of compatible bottles, making it a practical go-to for face serum, primer, and treatment launches where precision application and clean aesthetics both matter.

Why brands choose this

• External spring eliminates metal-formula contact: The spring sits fully outside the pump body, never touching your liquid — a meaningful design distinction for brands formulating with actives, acids, or metal-sensitive ingredients in serums and eye creams.
• 0.23cc dosing controls the consumer experience: A calibrated dose per actuation prevents over-dispensing, which is especially relevant as consumers become more intentional about product use — supporting better perceived value and a more ritualized application experience across serums, primers, and foundations.
• Slim silhouette fits across multiple prestige categories: The black glossy finish and slim pump profile read as premium on shelf without added decoration, and the 20-410 neck compatibility spans face serum, eye cream, foundation, and primer — giving brand developers real ranging flexibility from a single component.

Decoration