"Scar Tissue" is the first single from American rock band Red Hot Chili Peppers' seventh studio album, Californication (1999). Released on May 25, 1999, the song spent a then-record 16 consecutive weeks atop the US Billboard Hot Modern Rock Tracks chart as well as 10 weeks atop the Billboard Mainstream Rock Tracks chart, and it reached number nine on the Billboard Hot 100. It was also successful in Iceland, New Zealand, and Canada, reaching numbers one, three, and four, respectively. In the United Kingdom, it charted at number 15 on the UK Singles Chart.