ZJ Pack 18-410 PP Serum Pump, 0.23cc Dosage with External Spring

What this packaging is

An external spring design keeps metal entirely out of contact with the formula — a quiet but critical detail that makes the 18-410 PP Serum Pump a go-to choice for sensitive skincare formulations. Built from polypropylene with an 18mm 410-finish neck, this pump delivers a precise 0.23cc dose per stroke, making it ideal for face serums, foundations, eye creams, primers, and BB creams. The slim actuator and glossy collar finish give it a clean, treatment-forward aesthetic that reads premium on shelf. Customization options including electroplating, spray coating, and water transfer printing let brands dial in a signature look without sourcing a separate decoration step.

Why brands choose this

• External spring protects sensitive formulations from metal contact: The spring sits outside the pump body entirely, never touching the product inside. This makes it a reliable fit for active-rich serums, eye creams, and other formulas where metal ion contamination is a real formulation concern — no compromises needed.
• 0.23cc dose consistency builds consumer trust at application: Precise per-stroke dosing reduces waste and delivers a repeatable experience every time, which matters in a market where consumers are increasingly ingredient-aware and expect their serums and treatment products to perform as described on the label.
• Broad decoration compatibility unlocks brand differentiation: Electroplating, spray coating, and water transfer printing are all on the table, so brands can move beyond a stock look and create a pump that matches their visual identity — especially valuable across a multi-SKU line spanning serums, foundations, and BB creams.

Decoration