Griffin Hospital will offer free skin cancer screenings from 4-7 p.m. on July 17 and Aug. 8 at the hospital’s Center for Cancer Care, 350 Seymour Ave., Derby.

Some symptoms are not noticeable, so skin cancer screenings are advised. To make an appointment, call 203-732-1280.

According to the American Cancer Society, skin cancer is the most common of all cancers. More than 3.5 million cases of basal and squamous cell skin cancer are diagnosed in the United States each year.

Risk factors include unprotected or excessive exposure to sunlight or tanning booths, having pale skin, family history, multiple or unusual moles, and severe sunburns in the past.