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nitrogen and sulfur
the five main elements that make up the chemical compostition of human hair are carbon, oxygen,hydrogen, and
which type of melanin provides natural colors ranging from red and ginger to yello and blond
the measurement of individual hair strands on 1 square inch (2.5 square centimeters) of the scalp is
more alkaline solutions
compared to hair with high porosity, chemical services performed on hair with low porosity require
the naturally occuring fungus that causes the symptoms of dandruff when it grows out of control is
a highly contagious skin disease caused by a parasite called a mite that burrows under the skin is
the long, coarse,pigmented hair found on the scalp,legs,arms,and bodiesof males and females is called
an autoimmune disorder that causes affected hair follicles to be mistakenly attacked by a persons own immune system is
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