|Born||John Paul Seponski
March 12, 1980 
Phoenixville, Pennsylvania, U.S.
|Years active||2001 – present|
Lavoisier is known for his role as Rex Balsom on the ABC soap opera, One Life to Live, Portraying that character from 2002 to 2012. During that same year, he also appeared in the horror movie Wolves of Wall Street. He is a member of the advisory board of theatre production company Streetlight Productions, Inc, and has performed in various off-Broadway plays including Discordant Duets and Counterfeit Garden.
He was born John Paul Seponski in Phoenixville, Pennsylvania and attended Phoenixville High School, before going on to the University of the Arts in Philadelphia, where he studied music performance, particularly the drums.
|2001||All My Children||Orderly||Episode Dated:
|Sex and the City||Model||Episode:
Coulda, Woulda, Shoulda
Extra at fashion show in The Real Me
|2002–12||One Life to Live||Rex Balsom||Main role
Episodes Aired: 354
|2002||One Day in May||Matt Daniels||TV movie|
|Wolves of Wall Street||Barnes||as John Paul LaVoisier|
|2003||Saturday Night Live||Himself||Episode Dated:
Jeff Gordon/Avril Lavigne
August 22, 2003
June 9, 2004
March 17, 2005
June 12, 2006
|The View||Himself||Episodes Dated:
March 12, 2003
April 30, 2008
|2004||Soap Center||Himself||Episode Dated: April 11|
|2007||Gossip Girl||Field Hockey Coach||Episode:
|6ABC Boscov's Thanksgiving Day Parade||Himself||TV|
Human Lab: Soap Star Edition
|The 35th Annual Daytime Emmy Awards||Himself-Presenter||TV|
|The Mentalist||Chad Carmichael||Episode Dated: October 27, 2011|
|2014||Beacon Hill||Eric Preston||Web series|
|2015||Winterthorne||Hugh Cambridge||Web series|
|Days of Our Lives||Philip Kiriakis||Series regular; 2015–16|
- John-Paul Lavoisier biography - IMDb.com
- Streetlight Productions Archived 2006-01-10 at the Wayback Machine., About Streetlight; retrieved May 2, 2006.
- "First Look at DIRTY SOAP". SoapOperaDiegst.com. August 26, 2011. Retrieved March 13, 2015.
- "The Characters". Beaconhilltheseries.com. Retrieved September 27, 2015.
- "Watch The Winterthorne First Trailer … Where Candy and Drama Come Together!". Michael Fairman On-Air On-Soaps. May 22, 2015. Retrieved September 17, 2015.
- Mulcahy, Jr., Kevin (August 27, 2015). "Watch the Premiere of Michael Caruso's Winterthorne". We Love Soaps. Retrieved September 17, 2015.
- Kerr, Luke (May 22, 2015). "Winterthorne Debuts Epic First Trailer". Daytime Confidential. Retrieved September 17, 2015.
- "EXCLUSIVE! JOHN-PAUL LAVOISIER JOINS DAYS". SoapOperaDiegst.com. Retrieved July 18, 2015.
- "Rex and the City", Soap Opera Digest; retrieved January 24, 2008.
- About.com biography, October 2002 (retrieved May 2, 2006)
- "Trading Places". 'Soap Opera Weekly. p. 18.