Container care
How to prevent leaks from a refillable perfume atomizer
For a refillable atomizer, correct assembly, compatible filling and the maker's fill limit are the relevant starting checks. Different refill mechanisms cannot be repaired with one universal tightening or cleaning method.
A HUME Fragrance buying guide

Use the specified refill system
Bottom-fill, cartridge and screw-top designs need their own instructions. Avoid incompatible source bottles.
Inspect the intended closure
After an approved refill, check that components are in their intended state without forcing valves or seals.
Stop guessing at repairs
A persistent leak should go to the device maker's support process. Do not use glue, heat or unapproved solvents.
Try this before you buy
Read the model's fill and closure guide before adjusting a leaking refillable device.