Skin composition

 

Epidermis contains a major protein called keratin. Keratin is a fibrous scleroprotein  and is digestible by many proteases. In contrast to collagen, keratin has a high sulphur content with moderate tyrosine and low proline. Inorganic salts include potassium, sodium, calcium, magnesium chloride and glucose. It also contains pigments such as melanins. Sebum which is mixture of lipids and is released from the sebaceous glands.

Skin tissue contains 57.7% of water, 27.3% of protein, 14.2% of lipid and ash is 0.6.

Nail

Substances are similar to those of animal hors and hooves. It contains mainly keratine, which is different from the hair in that it has less keratine than hair.

Hair

Hiair contains mainly keratin. In the human it is very rich in cystine and red hair has the highest amount of sulphur.

Color Content
Blonde, brown or black Melanin in varying amounts
Grey Absence of pigments
Bright red Iron
White Calcium carbonate, calcium phosphate

Skin pigmentation

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