Proponents of hair analysis claim that even the smallest amounts can be detected. Based on the analysis, nutritional and therapeutic measures can be recommended then to correct the imbalances and detoxify the body. The structure of the hair is a shaft that is made up of lifeless protein material arranged around a central core. This outer protein layer is then sheathed in delicate cuticle cells, which are arranged like shingles or tiles. The cuticle is in turn covered by a layer of protein substances and fatty substances that will protect the hair.
Hair grows about half an inch a month and some one-hundred new hairs are added daily.
Hair does grow for three to six years before falling out. Using rubberbands, and strong chemicals in hair will cause hair to fall out faster though, so it is recommend to avoid using rubberbands or chemicals in the hair. The hair root is anchored with each shaft of hair to the scalp. The root is nourished by a network of delicate blood vessels, which deliver vitamins, minerals and trace elements to the outer layers of the hair shaft. These same vessels are also deposited in the hair and any toxins or drugs present then show up during hair analysis.