There is growing evidence that indoor tanning (IT) poses a serious public health risk, yet the IT industry continues to experience explosive growth, attracting more young people to tanning salons. In this cluster analysis, Hillhouse et al identified 4 tanning subtypes: event tanners, spontaneous or mood tanners, mixed tanners, and regular tanners. Event tanners tanned at moderate to low levels and had relatively low intentions to tan in the future. These casual tanners may be the most likely to be affected with appearance-related messages that might occur in clinical settings. Regular tanners tan at very high levels and were the most at-risk group. The mood component in this group suggested that they might benefit from screening for depression, seasonal affective disorder, body dysmorphic disorder, and substance-related disorders.