Hi Brady,
It is roughly 6 percent. I've been applying it twice a day for the last
several days. Impatient I guess. Sometimes it stings, sometimes it doesn't. It
does not sting when it gets in my eyes.
I'm treating only one side of my face....it is more red and irritated than
the non-treated side.
I'll let you know about the book.
Great website, by the way.
Regards,
Perry
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