Use only as directed. Not following instructions (including multiple passes, too high setting, pressure, pausing in one spot, or other unintended uses) may lead to rash, redness, itching or even injury. If this occurs, discontinue use and consult a medical professional. Product is intended for external use only. Avoid sensitive areas including any area with broken, irritated, or itching skin. The product and its charger are not waterproof. Do not use near water, while skin is wet, or while skin is moist from product. Keep product out of reach of children and do not use on children below age 16.  PMD is not responsible for malfunction or injury if the product is not used as intended. Not intended for clinical or commercial use. The effects of the Personal Microderm are not always immediately visible and results may vary. Do not use any active or peeling skincare products for 48 hours before or after using the Personal Microderm —your skin may have increased sensitivity.If you have any questions regarding application, please reach out to our experts at 888-445-4532.