Extend the tip approximately 1mm. Extending it too far may cause it to break. Before first use, smooth and shape the tip on the back of your hand or on paper. Always retract the tip after use, and avoid getting it wet with water or sweat.
If the product enters your eyes, rinse immediately with water or lukewarm water. Do not use on damaged, swollen, or irritated skin. Stop use and consult a dermatologist if redness, swelling, itching, irritation, or other unusual reactions occur.