 Following a life @-@ threatening drug addiction that developed after leaving the Chili Peppers in 1992 , Frusciante made a full recovery after a month of drug rehabilitation in the early months of 1998 . Shortly thereafter he was asked to rejoin the Red Hot Chili Peppers . After several months of writing and recording , the Chili Peppers ' next album , Californication was released . The album went on to sell over 15 million copies worldwide , becoming the Chili Peppers ' most successful recording to date . Frusciante 's return generated much response from critics , who recognized the album as a commercial revitalization from their previous record , One Hot Minute . A two @-@ year @-@ long , international tour followed , which included several festival appearances , including Woodstock 1999 and Rock in Rio . 
