Among other things, the present invention provides novel isoprenyl compounds capable of effectively modulating inflammatory responses and pharmaceutical, cosmetic, cosmeceutical and topical compositions comprising these isoprenyl compounds. Anti-inflammatory compounds of the present invention are useful in treating or preventing diseases or conditions associated with inflammation. Proinflammatory compounds of the present invention are useful in treating or preventing diseases or conditions associated with suppression of inflammatory responses. Thus, the present invention also provides methods useful in the treatment or prevention of diseases or conditions associated with inflammation as well as methods useful in the treatment or prevention of diseases or conditions associated with suppression of inflammatory responses.