Study aim: Comparison of the effectiveness of stress inoculation training and mindfulness skills training on appearance anxiety, self‑criticism, metacognitive evaluation of body dysmorphic disorder, and self‑acceptance in female students with body image obsession Design: A controlled clinical trial with parallel groups and double‑blind design, selected through purposive sampling and then assigned through simple randomization into three groups of 15 participants Settings and conduct: The study is conducted at the Fanous Rah Psychological Center in Ahvaz on female students with body image obsession. After conducting a diagnostic interview and screening with the Body Dysmorphic Disorder Questionnaire (minimum score of 10), 45 individuals are purposively selected and then randomly assigned to three groups: stress inoculation training, mindfulness training, and the control group. The interventions are delivered in group sessions by a psychology specialist Participants/Inclusion and exclusion criteria: Inclusion criteria: Be at least 15 years old and at most 17 years old, female, Having body dysmorphic disorder; Exclusion criteria: Having mental disorders and taking psychiatric medications, Having physical problems that interfere with the intervention process Intervention groups: Intervention Group 1: Stress inoculation training; based on Meichenbaum’s standard protocol (1985) and Mobini’s translation (1997), it is implemented in 9 weekly group sessions of 120 minutes for the experimental group. Intervention Group 2: Mindfulness skills training; based on the protocol of Bowen and colleagues (2011), it is implemented in 8 weekly group sessions of 120 minutes for the members of the experimental group. Control Group: It does not receive any intervention Main outcome variables: Appearance Anxiety; Metacognitive evaluation of body dysmorphic disorder; self-criticism; self acceptance