Usually, no serious side effects are to be expected. When treating smaller areas of skin, healing is no matter. When treating larger areas of skin, swelling may occur for 1-3 days. The scab falls off a few days later. After that, the skin in the treated area will be pink for about 4 weeks to 4 months. After treatment up to approximately 4 months after, UV protection with SPF 50 must be applied to avoid pigmentation problems.