To sterilize plastic fine mist spray perfume bottles, you can follow these steps:

Empty the Bottle: Ensure that the perfume bottle is empty by using up the remaining perfume or pouring it into a different container.

Disassemble the Spray Mechanism: Take apart the spray mechanism of the bottle. This typically involves unscrewing the cap or removing the top part of the sprayer. Refer to the manufacturer's instructions if needed.

Wash with Warm Soapy Water: Fill a basin or sink with warm water and add a few drops of mild dish soap. Place the plastic bottle and its components in the soapy water. Use a soft brush or sponge to scrub the inside and outside of the bottle, as well as the spray mechanism, to remove any residue or buildup.

Rinse Thoroughly: Rinse the bottle and its components with clean water to remove all traces of soap.

Prepare a Sterilizing Solution: In a separate container, prepare a sterilizing solution. You can use a mixture of equal parts water and rubbing alcohol or a solution of water and hydrogen peroxide. Both options have antimicrobial properties that can help kill bacteria and disinfect the bottle.

Submerge the Bottle: Place the plastic bottle and its components in the sterilizing solution, ensuring they are fully submerged. Allow them to soak for at least 5-10 minutes to ensure thorough sterilization.

Air Dry: After the soaking time, remove the bottle and its components from the sterilizing solution and place them on a clean towel or rack to air dry completely. Avoid using a cloth or paper towel, as they can leave behind lint or fibers.

Reassemble the Spray Mechanism: Once the bottle and its components are fully dry, reassemble the spray mechanism. Ensure that all parts fit securely and properly.

Test and Refill: Before using the sterilized perfume bottle, test the spray mechanism to ensure it functions correctly. If everything works fine, you can refill the bottle with your desired perfume.