Photodynamic Therapy is characterised by the use of 5-Amino-Levulinic Acid (5-ALA) and the addition of a light source to activate the process. In sun damage, Actinic Keratoses (the often hard, discoloured lesions that are found on areas with ongoing sun exposure such as the head, face, arms, legs and chest) are able to be removed … Continue reading 5-ALA for sun damage