Introduction: Acne vulgaris is a common cutaneous disorder. Many studies were done exploring the relationship between acne and diet with controversial results. Objective: To assess the relation between dairy products consumption and acne risk and severity in young adult patients with acne vulgaris. Method: This is a case control study using interview questionnaire conducted at the dermatology clinics at King Fahd Hospital of the University in Alkhobar, Saudi Arabia for a period 6 months. Participants were interviewed with questionnaires related to specific dairy food consumption. Acne severity was assessed by a dermatologist on duty using the Global acne grading system. Results: A total of 100 participants. Their ages varied 13-25 years. There was no statistically significant difference (P<0.05) found between the severity of acne with all the dietary factors except for consumption of milk (P=0.033).