Glass perfume bottles often feature an FEA neck (Federation of European Aerosol) because it provides a standardized solution for packaging, making it easier for manufacturers and consumers alike. The FEA neck finish is widely used in the perfume and cosmetic industry for several key reasons:

1. Compatibility with Spray Pumps and Caps
   One of the main reasons why FEA neck finishes are popular is because they are compatible with a variety of spray pumps and closures. Common neck sizes like FEA 15 and FEA 20 (measured in millimeters) ensure that manufacturers can easily match bottles with corresponding pumps and atomizers. This standardization simplifies the production process, reduces costs, and avoids the need for custom-made components.
2.  Airtight Sealing to Prevent Evaporation
   Perfume manufacturers rely on airtight packaging to prevent fragrance evaporation. The design of the FEA neck ensures a secure seal between the bottle and the spray pump or closure, preventing leaks and maintaining the perfume’s shelf life. This is essential for ensuring that the scent remains intact and the product retains its quality over time.
3. Supports Crimped Spray Pumps
   FEA neck finishes are designed for crimped spray pumps, a common feature in perfume packaging. The crimping process secures the pump to the bottle neck, ensuring a tight, tamper-evident seal. This process not only guarantees the perfume is safe from leaks but also enhances the smooth operation of the spray mechanism.
4. Elegant and Sleek Design
   Perfume bottles are often designed with aesthetics in mind. The FEA neck provides a clean and elegant look to the bottle’s design, maintaining a balance between functionality and style. Since high-end perfume brands rely on sophisticated packaging, the FEA neck fits this requirement, offering both reliability and beauty.
5. Global Standard for Perfume Bottles
   The FEA neck standard is recognized worldwide, making it a versatile choice for global brands. By adhering to this standard, perfume manufacturers can ensure that their packaging works seamlessly in international markets without having to adjust the neck design for different regions.