The treated area will likely be a little reddened with very slight swelling and can last anywhere between a few hours to 48 hours. You may experience some flaking of old skin to reveal new fresh skin underneath. Some common treatment effects include slight bleeding of the needling and warmness felt during treatment but no significant pain. Other side effects include mild redness, tingling, and tenderness after treatment. Tiny scabs may appear as your skin heals; these scabs should be left alone and will fall off naturally.