The Encyclopedia of Henna ~The Science of Henna and Skin~
Henna and Skin: Stratum Corneum
Catherine Cartwright Jones c 2003 
Kent State University
What is your skin made of, and how is it made? 

How does henna stain your skin?

Why doesn't a henna stain last forever like a tattoo?

Diagram of Henna stains, day after day:
Day 1
Day 3
Day 7
Day 14

Why does the stain get darker when you remove the henna paste?

Why does the stain disappear so fast in some places?

Why do henna stains on the the palms and soles last a long time, and why are they so dark?

What are those last orange traces, and why do they seem to last forever?

What happens if the henna gets beneath the straum cormeum, into the basal layer?


"Number of Cell Layers of the Stratum Corneum in Normal Skin - relationship to the anatomical location on the body, age, sex and physical parameters"
Zhen Ya-Xian, Takaki Suetake, Hachiro Tagani
Archive of Dermatology Research, 1999, Issue 291: 555-559; Springer-Verlag, 1999

"Skin, the Human Fabric"
Doug Podolsky, US News Books, Washington DC, 1982

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The patterns on the leg above are from Origins 1 and 2 by Alex Morgan

"Henna, the Joyous Body Art" 
the Encyclopedia of Henna
Catherine Cartwright-Jones c 2000 
registered with the US Library of Congress
TXu 952-968