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1. Ergonomic Design, Distinct Presence
Moving beyond traditional roundshoulder designs, this bottle features a uniquely flattened shoulder contour. This architecture provides a secure, comfortable grip for precise application and ensures stability on vanity shelves. It's a vessel that feels as good in the hand as it looks to the eye.

2. The Science of Precision Dispensing
Our patented two-chamber dropper technology tackles the common pitfalls of traditional pipettes: inconsistent drop size and air bubble formation.

Primary chamber: Draws the liquid formula consistently without trapping air.

Secondary regulating chamber: Measures and releases a precise volume with each squeeze, delivering dose-to-dose accuracy (±0.01ml).
This system is especially critical for potent active ingredients (e.g., Vitamin C, Retinol) where correct dosing impacts both efficacy and user tolerance. It ensures your customers apply the exact amount you formulated them to use.

3. Tailored to Your Formula and Brand
We understand that one size does not fit all. This system is engineered for compatibility across a wide viscosity spectrum, from water-like toners to thicker oil-based serums. Beyond function, we offer aesthetic tailoring:

Glass: Choose from clear, light amber (UV-blocking), or cobalt blue glass.

Dropper Assembly: Select a matte black, gloss white, or natural rubber bulb to align with your brand's color story.

Branding: Utilize silk-screen printing or elegant hot-stamping for your logo.

4. Engineered for Integrity and Trust
The package is built for real-world conditions. The borosilicate glass composition resists thermal shock during filling and cleaning. The dropper assembly undergoes rigorous integrity testing, including:

Inversion Leak Testing: 72-hours, under variable temperatures.

Viscosity Performance Checks: Certified performance across 5,000 cps.

Item	YINMAI 20ml Glass Dropper Serum Bottles Customized 0.5oz Hair Essential Oil Dropper bottle for Cosmetic Packaging
Material	Made of glass
Volume	20ml
Printing Artwork	Coating,Screen prinitng,Golden printing,Silver printing,Frosting,Elactroplating golden,Shading,Matt,Shine and so on.
Accessories	Dropper,plastic cap,Aluminium cap,Rubber stopper,pump sprayer
Bottle color	Black,Golden,Pink,Amber,Blue,Clear, SO ON
Rubber color	White,black,yellow,blue,red,rose red
Sample	Free sample in our stock.Or make sample as your design
Buld order Delivery Time	30-40 days after deposit
Payment	T/T,Paypal
Factory	Welcome to visit our factory in Baiyun,Guangzhou
Certification	ROHS/CE/ISO/FDA
Package	Standard safe exported carton.or as you requirements