Rubbing alcohol Acetone White vinegar WD-40 Nail polish remover
Make sure that the brush is not dripping with the solution. If it is, dab it off on a paper towel before cleaning the contact.
Alcohol dries quickly, so it should be dry in a matter of minutes, but a cleaning solution, vinegar, or nail polish remover might take longer to dry.
The instructions should also provide information on how long to leave the product on before scrubbing or wiping it off.
The kit’s instructions might also specify which brushes are meant for certain types of contacts.
Once the contact is completely covered, check the time and leave the solution on for the amount of time indicated by the kit. This may range from a few minutes to a few hours depending on how dirty the contacts are. For example, you might need to leave the solution on overnight if the contacts are extra dirty. [8] X Research source
If the contact still appears dirty, repeat the process.
