Dr. Louis Felger stated that hair sometimes came out very quickly, in some cases in the short space of a few hours over night. when the hair would turn grey. He did not know of any chemical that would turn the hair permanently grey. A 5 or 10 per cent. solution might cause hair to come out if applied continuously. Water-blisters on the scalp were very rare. He could not conceive of them on a person's head unless there was baldness or some serious skin disease, Witness had
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