Is straight pubic hair a mystery to you? Learn about the evolutionary reasons behind this unique trait and why it differs from other body hair.. Almost all body hair is curly. Arm pit hair, pubic hair, even the hair on arms and legs is most often curly. It's just the hair on our heads (and eyebrows) that can sometimes be straight.
In most cases it is most similar in color to the eyebrows of the individual.On some individuals, pubic hair is thick and/or coarse; on others it may be sparse and/or fine; these varieties may appear in either sex.. Although fine vellus hair is present in the area during childhood, pubic hair is considered to be the heavier, longer, coarser hair that develops during puberty as an effect of rising levels of hormones: androgens in males and estrogens in females.