Post-Testing Phase: Following the completion of the testing phase, each participant will be given the opportunity to discuss their participation in the study and raise concerns of difficulties they experienced during completion of the study. Participants will also be made aware that they can discuss their experience with a named independent person, whose contact will be clearly mentioned in the Debrief. Should participants become distressed or highlight concerns, the CI will use her clinical skills, as a Practitioner Counselling and Health Psychologist and Psychotherapist Counsellor. The RA to the study will be supervised closely and frequently by the CI. The RA is knowledgeable in the area of skin disorders and acne in particular at Masters level, and has worked in many clinical studies before as part of her post with the Mental Health Research Network. She also has a certificate in Good Clinical Practice (June, 2014). When data collection is carried out by the RA, the RA will perform her duty of care at all times and will follow good practice and ethics for research guidelines. Any concerns the RA has, she will discuss with the CI immediately, who will be available to be contacted during meeting with participants and will provide her with further guidance about which course of action should it be necessary. If distress escalates and the CI is unavailable, the RA will contact appropriate clinical staff (e.g. Dr Andrew Affleck, a named nurse or another consultant dermatologist on site) for advice and input, if necessary. Potential participants will be made aware of these stages and limitations to confidentiality prior to consenting to take part. A Patient Information Sheet will be completed by the patient along with the rest of the measures.