Essential oil glass bottles, safety covers, and inner plugs play important roles in preserving the quality and safety of essential oils. Let GUANGZHOU PANYUE PACKING.CO.,LTD. break down their functions:

 1.Essential Oil Glass Bottle:  

Material: High-quality essential oil bottles are typically made of dark-colored glass, such as amber or cobalt blue. This is because these colors help to protect the essential oils from light exposure, which can degrade the oil's quality over time.

UV Protection: The dark color of the glass provides UV protection, preventing ultraviolet light from penetrating and damaging the sensitive compounds in the essential oils.

2. Safety Cover or Cap:  

Sealing: The safety cover or cap is designed to seal the bottle tightly. This prevents air from entering the bottle and helps maintain the freshness and potency of the essential oil.

3. Inner Plug or Orifice Reducer:  

Dispensing Control: The inner plug, often called an orifice reducer, is a small insert in the bottle neck that controls the flow of the essential oil. It typically has a small opening that allows drops of oil to be dispensed one at a time.

Reduced Spillage: The orifice reducer helps in controlling the amount of oil dispensed, preventing spills and wastage. It is particularly useful for oils that are highly concentrated, as only a small amount is needed.