1. Skin cancer screenings: Dermatologists can perform skin cancer screenings to check for any unusual moles or skin growths that may be cancerous. These screenings can be done during a regular office visit or as part of a skin cancer prevention program.

2. Diagnosis and treatment: If a dermatologist suspects that a mole or skin growth may be cancerous, they can perform a biopsy to determine whether it is cancerous. If cancer is detected, the dermatologist can recommend and provide treatment options, such as surgery, radiation therapy, or chemotherapy.

3. Education and prevention: Dermatologists can also educate patients on the importance of sun protection and the steps they can take to reduce their risk of skin cancer. This may include recommending sunscreen, wearing protective clothing, and avoiding prolonged sun exposure.

4. Follow-up care: After a skin cancer diagnosis and treatment, dermatologists can provide follow-up care to ensure that the cancer has not returned and to monitor the skin for any new suspicious growths.

By regularly visiting a dermatologist and following their recommendations, individuals can take an active role in preventing skin cancer and ensuring that any skin cancers are caught early, when they are most treatable.