Sunscreen or Hijab?

Overtaking this woman from behind, at first I thought it was a Muslim woman with a hijab since the head covering was under her helmet as a hijab would be.  But then when I got beside her to take this picture, I saw that (I think) it is just a light veil or shawl that she is using to block the sun, protecting even her face, and it is thin enough that it would fit under the helmet.  For many Cambodian women, keeping their skin lighter in color is just about as demanding a principle as following Islam for the true believers.  Notice this woman makes sure that not even her hands are exposed to the sun.