Based on the provided reviews, the potential side effects of using the AGE-R Booster Pro include:

• Tingling or burning sensation, especially at higher intensity levels
• Skin irritation or redness, particularly for those with sensitive skin
• Mild discomfort or soreness in muscles, especially when using the Derma Shot mode
• Potential for facial paralysis, though Medicube states this is unlikely due to low output
• Minor blemishes or breakouts, possibly due to over-nourishment or physical stimulation

It's important to note that individual experiences may vary, and some users may not experience any side effects. Always start with lower intensity settings and gradually increase as your skin adapts. If you have sensitive skin or a weak skin barrier, consider consulting with a dermatologist before use.

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