Yes, you can use a cleansing balm with eyelash extensions, but it's important to be cautious and gentle during the cleansing process to avoid damaging the extensions. Here are a few tips to keep in mind:

1. Choose a gentle cleansing balm: Look for a cleansing balm that is free from harsh chemicals and fragrances. Opt for one that is specifically formulated for sensitive skin.

2. Use a small amount: Take a small amount of the cleansing balm and gently massage it onto your face, avoiding the eye area as much as possible. Be careful not to apply too much pressure or tug at the lashes.

3. Cleanse around the eye area: When cleansing around the eye area, use a gentle, downward sweeping motion, avoiding direct contact with the eyelash extensions. Focus on the surrounding skin and the areas where makeup or dirt may have accumulated.

4. Rinse thoroughly: After massaging the cleansing balm onto your face, rinse it off thoroughly with lukewarm water. Make sure to remove all traces of the balm from your lashes, as any residue left behind could potentially weaken the adhesive bond of the extensions.

5. Pat dry gently: After rinsing, gently pat your face dry with a clean, soft towel. Avoid rubbing your eyes or lashes vigorously, as this can cause damage or premature shedding of the extensions.

Remember, it's always a good idea to consult with your lash technician or a skincare professional for specific recommendations tailored to your unique situation.