Can numbing cream cause an allergic reaction or skin irritation?

While rare, mild skin redness or minor irritation can occur if you have a sensitivity to topical anesthetics like lidocaine. To prevent unexpected skin reactions on the day of your appointment:

1. Do a Patch Test: Apply a small dot of cream to your inner wrist 24 to 48 hours before your session.

2. Check for Redness: If you experience severe burning, hives, or swelling, wipe it off immediately and avoid using topical anesthetics.