Some folks are more sensitive to peppers than others, but we suggest using food-safe gloves and a mandoline - and perhaps glasses or eye protection. The mandoline will give you the evenest slices and less hands-directly-on-peppers time. If you opt not to wear gloves, be very certain to wash your hands thoroughly after handling the peppers, because anything that you scratch, itch, or touch while there are traces of pepper juice on your hands and fingers can make life pretty uncomfortable. If you happen to inadvertently get jalapeno juice in your eyes, do a cold water rinse until the heat subsides. We've also heard of folks soaking cotton balls in milk and placing that on their eye - the capsaicin in the pepper will break down in the milk fat.