Recent in In vitro (page 11 of 11)
May 6, 2003 | J. Alan Swift, Developmental Toxico-Pathology Group; Surinder P. Chahal and Debra L. Coulson, Croda Colloids Ltd.; and Nicholas I. Challoner, Croda Oleochemicals Ltd.
Both bending and abrasion should be tested—along with extension—when evaluating hair strength, as the authors show in tests of a new active for increasing the strength of bleached hair.
May 6, 2003 | D.S. Orth and K.S. Delgadillo Eck, Neutrogena Corp.
A miniaturized system using broth enrichment followed by either streaking on agar or fluorescence treatments can eliminate colony counting in the linear regression method of preservative efficacy testing.
May 6, 2003 | Charles Fox, Charles Fox Associates
From more than 40 technical sources published in the 1990s, the author reviews methodologies from measuring important variables such as hair condition, bioactivity and irritation of skin and eyes.