difference between "density" and "fullness&qu
It is'nt necessary that those with the fullest-LOOKING hair have the most density. Do u think that Africans with curly hair, just cuz their hair LOOKS so dense with no scalp showing, is actually very dense? Actually, they have significantly sparser hair on their heads than ppl with straight dark hair have, who in turn have less dense hair than blondes. They would have maybe 70000-80000 hairs at best. It is the thickness and curl which gives their hair a wonderful appearance of "fullness" or "coverage" in spite of their lower density. Their hair blocks light very well. While blondes with fine ,straight, flat hair often have very dense hair (140000 average, twice as much as African hair) still don't seem to have much hair because of the poor coverage offered by the individual hairs.
I myself have fine, straight, black hair of high density . But my hair is flat and lacks volume, and I have an oily scalp to top it all. My scalp does'nt show through when wet, but only if I push all the hair straight forward or slick it straight back. When its messed up , some scalp indeed shows, but then again, that is true for most people. The guys with hair which looks very thick may have at best 20-30% higher density than others. It is the quality (thickness, wave or curl, stiffness etc) of their hairs which contribute to the appearance of thick hair. Just think, if density was the most important factor in contributing to the fullness of hair, then hair transplants would be useless, because only 20% or less of the persons original (prior to hairloss) density is actually transplanted. Still, with this little amount of hair, it is possible to get reasonably full coverage. A certain minimum density is required to produce full coverage - more so if the hair is fine and straight, less if the hair is coarse and wavy or curly. Beyond that, the quality of the individual hairs predominates in producing the appearance of fullness.
Cheers,
Arjun
