"We play it safe because rose water is the best for sensitive skin, " Mr. Georgiou says, before wrapping the obligatory hot towel around my face.

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And for those with sensitive skin, an environmental conscience, or both, "tree free" toilet paper made from cotton linters is now available.

NPR: Texas Cotton: 'Farmer Profits at Every Step'

For dry and sensitive skin, she recommends combining equal parts Greek yogurt, raw sweet potatoes and flax seeds in a blender.

WSJ: Face Masks: Please Do Try This at Home | Outer Beauty

"For example, frogs and salamanders are very sensitive to environmental change, maybe because of the way their absorbent skin interacts with the environment, " Professor Edwards told BBC News Online.

BBC: NEWS | Science/Nature | Big genome can up extinction risk