It is used by Terry Robbins on the cast of The O.C.

Wolf and Jim Wayne on Misha Barton

Cesare Ruffo and Totts at JosephMartin salon in Beverly Hills on Paris Hilton and Carmen Electra

K. Troy Zestos at Chroma Studio on Paris Hilton, Kat Foster, Kate Walsh, Rachel Bilson and Melinda Clarke, which he also used on the hair at the set of The Simple Life

Steven Tapp on Rachel Griffiths from Six Feet Under and Niki Griffin from the O.C.

Corinne Asch on Britney Spears and Keyra Knightley extensions

Riawna Capri at Ken Paves salon on Lindsay Lohan

Mentioned by Chris McMillan on Allure magazine with Jennifer Aniston, Cameron Diaz and Sienna Miller

Sophia Milos loves the product

Rebecca Lynn Howard swears by it

Latest on OK Weekly Charlize Therone, the reason why the sexy star has Healthy hair.

All hair stylists at Warner Bros. Studios