The Elements in Keratin

CARBON. 50% - 60%

OXYGEN. 25% - 30%

NITROGEN. 8% - 12%

SULPHUR. 4% - 6%

HYDROGEN. 4% - 5%

These are supplied to the hair via the bloodstream in the form of amino acids -- the building

blocks of hair. These amino aacids are referred to as polypeptide chains. and are bound togetherwith horizontal cross bonds. Without these cross bonds, the hair is unstable.

BONDS are important to the hairdresser because their destruction can have definite effects

on the structure of the hair. When peptide bonds are broken via aggressive application of hair lighteners, perms or relaxers, there is no way of COMPLETELY reforming them. Hair

helpers like K-18 and Olaplex help form strengthening "bridges" or cross-links, which can assist the

hair's condition.. but, to date NO PRODUCT can completely, 100% perfectly, restore

the peptide bonds. Alkaline product action, therefore, must be observed carefully so that hair can successfully "change" without undue damage. Beth

Next class: Monday, April 7th. Indianapolis, Indiana. Robert Pence Salon and Day Spa.