Antiseptics (from Greek ἀντί: anti, '"against" + σηπτικός: sēptikos, "putrefactive") are antimicrobial substances that are applied to living tissue/skin to reduce the possibility of infection, sepsis, or putrefaction. Antiseptics are generally distinguished from antibiotics by the latter's ability to be transported through the lymphatic system to destroy bacteria within the body, and from disinfectants, which destroy microorganisms found on non-living objects.

Some antiseptics are true germicides, capable of destroying microbes (bacteriocidal), while others are bacteriostatic and only prevent or inhibit their growth.

Antibacterials are antiseptics that have the proven ability to act against bacteria. Microbicides which destroy virus particles are called viricides or antivirals.

The widespread introduction of antiseptic surgical methods followed the publishing of the paper Antiseptic Principle of the Practice of Surgery in 1867 by Joseph Lister, inspired by Louis Pasteur's germ theory of putrefaction. In this paper, Lister advocated the use of carbolic acid (phenol) as a method of ensuring that any germs present were killed. Some of this work was anticipated by:

David Howell Evans (born 8 August 1961), more widely known by his stage name The Edge (or just Edge), is a musician best known as the guitarist, backing vocalist, and keyboardist of the Irish rock band U2. A member of the group since its inception, he has recorded 12 studio albums with the band and has released one solo record. As a guitarist, The Edge has crafted a minimalistic and textural style of playing. His use of a rhythmic delay effect yields a distinctive ambient, chiming sound that has become a signature of U2's music.

The Edge was born in England to a Welsh family, but was raised in Ireland after moving there as an infant. In 1976, at Mount Temple Comprehensive School, he formed U2 with his fellow students and his older brother Dik. Inspired by the ethos of punk rock and its basic arrangements, the group began to write its own material. They eventually became one of the most popular acts in popular music, with successful albums such as 1987's The Joshua Tree and 1991's Achtung Baby. Over the years, The Edge has experimented with various guitar effects and introduced influences from several genres of music into his own style, including American roots music, industrial music, and alternative rock. With U2, The Edge has also played keyboards, co-produced their 1993 record Zooropa, and occasionally contributed lyrics. The Edge met his second and current wife, Morleigh Steinberg, through her collaborations with the band.

Ted Kirkpatrick (born 1960) is an American heavy metal drummer best known for his work with the American Christian metal band Tourniquet.

A founding member of the band Tourniquet - drummer, songwriter and lyricist Ted Kirkpatrick’s aggressive, musical, and often unorthodox approach to drumming has been recognized by thousands - critics and fans alike. A native of Milwaukee, Wisconsin, Ted began playing drums at age 12. By age 14, Ted was playing drums along with the records of many of his early influences, bands like Rush, King Crimson, and ELP. He holds a business degree from the University of Texas, Austin, where he graduated with honors, and often finds himself using the skills learned in college in the many facets of successfully operating the band.

Entirely self taught, Ted began to develop his own unique drumming style through a variety of influences. He is a great admirer of the classical masters and has attended countless classical concerts, and his drumming and songwriting are influenced by the power of Beethoven and Mahler symphonies, the staccato bursts of Scarlatti’s harpsichord sonatas, and the counterpoint of Bach’s fugues, to name a few. His latest solo release (2010) IN THE SHADOW OF THE MASTERS features Ted drumming to classics by Mozart, Beethoven, Rossini, Chopin, Paganini and others. “To me, the fantastic music of the classical masters is in a totally different realm - there simply is no other music to compare it to. I believe it was a time in history that will never be repeated - kind of like when dinosaurs roamed the earth. In drumming to these timeless works as with any music, I always strive to treat the drums as a musical instrument - not just a noisy time keeper.”