18-DIN Monomaterial Dropper Cap

What this packaging is

All-PP monomaterial construction makes this dropper cap unusually clean from a recyclability standpoint — no mixed materials to sort, no metal components to remove. The 18-DIN Monomaterial Dropper Cap by Calaso fits 18mm DIN-neck bottles with a secure threaded closure, purpose-built for face serums and hair oils where precision dispensing matters. The ridged grip edge makes it easy to open and reseal, which counts for something in daily-use rituals. Manufactured in Europe through Calaso's network of closure specialists, it carries the quality consistency that high-end beauty brands need. With an MOQ of just 50 units, it's genuinely accessible for small-batch launches or formula testing.

Why brands choose this

• Accessible minimums built for small-batch development: At just 50 units MOQ, this cap is one of the most accessible entry points in precision dropper closures — ideal for indie brands testing new serums or hair oil formulas before scaling, without the inventory risk of standard minimum orders.
• Monomaterial PP construction simplifies end-of-life: Built entirely from polypropylene with no mixed materials or metal inserts, this cap is easier to sort and process at end of life than multi-component alternatives — a meaningful spec detail for brands building cleaner material stories around their packaging.
• DIN thread and ridged grip match the serum and hair oil ritual: The 18-DIN neck finish delivers a secure, leak-resistant seal that travels well and resists accidental opening — critical for oil-based formulas. The ridged edge makes one-handed opening feel effortless, which aligns with how consumers actually use dropper products in their daily routines.