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

What this packaging is

An external spring that never touches your formula — that's the standout engineering move on the 18-410 PP Slim Serum Pump with Clear Overcap. By keeping the spring outside the pump body, this 0.23cc-dosage pump eliminates a common contamination point, which matters when you're filling antioxidant serums, active-loaded eye creams, or pigment-sensitive foundations. Built from polypropylene with a glossy collar and clear overcap, it pairs cleanly with a wide range of 18-410 neck bottles. Electroplating and water transfer printing options let brands push the customization envelope. A precise, formula-safe dispenser built for prestige skincare and cosmetic launches.

Why brands choose this

• Formula-safe external spring for sensitive actives: The spring sits entirely outside the pump body, meaning it never contacts your product. For brands formulating with reactive actives, delicate botanicals, or oxidation-prone ingredients, this design removes a real purity risk that standard internal-spring pumps carry.
• Precision 0.23cc dosage built for serum and eye cream rituals: Controlled micro-dosing is a growing consumer expectation in skincare — especially in the serum and eye cream segments where over-application is both wasteful and a pain point. This pump delivers a consistent, repeatable dose that reinforces the efficacy story brands work hard to build.
• Wide bottle compatibility streamlines development across multiple SKUs: The 18-410 neck finish is one of the most common in prestige skincare, meaning this pump can work across face serum, foundation, and eye cream lines without requiring custom tooling for each. For brand teams ranging multiple SKUs, that versatility shortens development timelines considerably.

Decoration