In the hours that follow a laser hair removal treatment, noticeable swelling may occur at the removal site. This is usually minor, but can become an issue particularly when removal has occurred in an exposed area such as the face. In rare cases, swelling can be significant and require the use of topical medication.
In those with sensitive skin, a reaction may occur in which the skin darkens after laser exposure. This phenomenon is known as hyper-pigmentation and, while usually short lived, can be unnerving and embarrassing. The skin will gradually fade to its normal color in time, but there is no way to speed up this process.