Participants were recruited via advertisements on social media and body-focused repetitive behaviour support groups. The researcher was contacted by individuals wishing to take part in the study, who then provided the potential participants with a link to the consent form, PIS and eligibility screening questionnaires.

In addition to a demographic questionnaire constructed for this study, the following standardised questionnaires were used:

- Body Image Questionnaire (BIQ);
- Massachusetts General Hospital Hairpulling Scale (MGH-HPS);
- Patient Health Questionnaire (PHQ-9);
- Generalised Anxiety Disorder scale (GAD-7);
- Frost Multidimensional Perfectionism Scale (FMPS);
- Obsessive Compulsive Inventory Revised (OCI-R);
- Style of Planning (STOP) questionnaire.

The questionnaires were presented via Qualtrics, an online survey platform. Responses from participants were exported from Qualtrics to a Microsoft Excel spreadsheet, ready for analysis.

Semi-structured interviews were conducted via Microsoft Teams (MS Teams) and audio recorded. MS Teams created a transcript of each interview which was checked for accuracy by the researcher using the audio recordings, and anonymised. Anonymised transcripts were used for the data analysis.