The second reason to keep your lashes clean is for the sake of eyelash health. If your lashes are dirty, bacteria will start to grow on them, affecting your lashs' ability to grow. The function of the eyelashes is to protect the eyeball by trapping particles and debris, so when you have eyelash extensions you will collect and accumulate more particles and debris than normal, which will facilitate the growth of bacteria. Once bacteria start to grow, they can cause the sebaceous glands along the lash line to swell, leading to loss of eyelashes.
This is a condition called blepharitis and you DON'T want it. The good news is that all of this can be prevented by simply cleaning your eyelashes daily. Failure to eliminate the daily accumulation of sebum, dirt and bacteria on the eyelashes can compromise the integrity of the extension adhesive and cause premature loss of eyelashes. Both formulas (unscented and with tea tree extract) are oil-free and suitable for eyelash extension, and are the best way to keep your lashes clean and safe.
In addition to cleaning your lashes daily, you'll also want to make sure to brush them every morning with a clean mascara stick. If you've invested in eyelash extensions, you'll also want to make sure you invest in a protective eyelash sealant. Keeping your lashes clean and free of residue build-up can help ensure that natural lashes continue to grow and fall in their natural cycle. It may look something like “How to care for eyelash extensions”, but one of the easiest ways to extend the life of your lashes is to keep them clean.
Oils and oil-based products break the adhesive bond and cause extensions to disconnect from natural lashes and fall out before natural lashes are ready to peel off. The cost of eyelash extensions can vary greatly depending on your location, the eyelash technician, the type of eyelashes you use, and the style you want. When your lashes stop looking and feeling good, you'll need to go back to your eyelash artist to retouch them.