Piquatine is an elvin liquid which is used to liquefy and remove skin. It is known as the second strongest solvent after alkahest. Sophie, Silveny, and Keefe receive this treatment from Elwin in Everblaze, after Lady Cadence discovers Aromark on Sophie's hands, and Keefe must have it again after he realizes his Sencen crest pin is a homing device. It was also used in Nightfall to reopen one of Keefe's wounds.

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