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the three main structures associated with the hair root are the follicle, bulb, and the
the blood and nerve supply that provides nutrients needed for hair growth are contained in the
in order to penetrate the cuticle layer and reach the cortex, oxidation haircolors, perm solutions, and chemical relaxers must have
the changes that take place in the hair during permanent waving, chemical relaxing, and oxidation hair coloring occur in the
oxygen and sulfer
the elements that make up the amino acids in the hair are carbon, nitrogen, hydrogen
a disulfide bond joins the ___ atoms of two neighboring cyctine amino acids to create cystine
the four most important factors to consider in a hair analysis include all the following except
wet hair with normal elasticity will stretch up to ___ of its original length and return to the same length without breaking
a type of alopecia by the sudden falling out of hair in round patches or baldness in spos is called
a topical medication applied to the scalp that has been proven to stimulate hair growth is
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