HYPERKERATOSIS AND ONYCHOLYSIS AFTER USE OF NEW NAIL COSMETIC

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Abstract
A new product "everon" has recently been introduced for use in lacquering nails. Apparently it is applied to the nail before the enamel for the purpose of producing a better adhesion of the enamel to the nail substance. The chemical nature of this product is not known to us beyond the fact that it contains some synthetic resins. Two patients are the basis for this report; their clinical condition and history are virtually identical: Within three days of the use of "everon" (in one after a first application and the other after a fourth application) the tips of all fingers became tender and slightly swollen; then followed changes in all fingers leading to subungual hyperkeratosis and the beginning in some nails of onycholysis. Attempted removal of the enamel even within a week of its application disclosed a permanent staining of the nail.1 Patch tests with "Everon" on both these

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