Initial discomfort, such as tingling or minor gum bleeding, may occur due to the high-frequency vibrations of the toothbrush as your gums adjust to this efficient cleaning method. This should subside within 1-2 weeks. If discomfort persists beyond this period, it may indicate gum issues; in such cases, stop using the product and consult a dentist.

Note: Sensitive users should start with the Gentle mode.