Side effects of a moustache FUE transplant are minor, and complications are very rare, as long as you follow aftercare guidance and take the proper precautions. Redness and swelling are completely natural, and the healing process is approximately 5 days. We advise that you avoid food that is difficult to chew, to ensure you do not disrupt the operated upon area, and stick to liquid meals if possible, such as smoothies, soup, and juices. This will give the hair grafts more stability and ensure your moustache hair transplant heals to its maximum capabilities.