ZJ Pack 24/400 PP Serum/Treatment Pump, 0.48cc Dosage, Twist Lock

What this packaging is

An external spring design sets this pump apart — positioned completely outside the pump body, it never contacts the formula inside, which matters enormously for sensitive serums and active-rich moisturizers. The 24/400 PP Serum/Treatment Pump delivers a precise 0.48cc dose per actuation and fits the industry-standard 24mm 400-neck finish, making it compatible with a broad range of bottle options. Built primarily from polypropylene with PE dip tube and gasket, it offers solid chemical compatibility across formulations. A twist-lock mechanism prevents accidental dispensing. Glossy collar, slim actuator, and decoration options including electroplating and spray coating give face serum and moisturizer brands real shelf presence without a custom component.

Why brands choose this

• Formula-safe external spring for actives-heavy products: The spring sits entirely outside the pump mechanism, eliminating metal-to-liquid contact — a critical advantage for vitamin C serums, retinol treatments, and pH-sensitive moisturizers where component interaction can compromise stability.
• Precise 0.48cc dosing builds consumer trust: Consistent per-press delivery is increasingly expected in the premium skincare space, where over-dispensing frustrates consumers and erodes perceived value. This dose-controlled format reinforces efficacy messaging and supports brands positioning around clinical precision.
• 24/400 neck compatibility reduces development complexity: The 400-finish 24mm neck is one of the most widely used standards in facial skincare packaging, giving brand teams flexibility to pair this pump across multiple bottle silhouettes — useful when building a cohesive product range or exploring new SKUs without retooling.

Decoration