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Collins, over at Washington State University, has been experimenting with spraying fine-powdered kaolin or bentonite, which are clays, mixed with water onto wine grapes so it absorbs materials that are in smoke.

Though its face was originally painted white with kaolin, enough color has worn away to leave it with the look of an actor sweating through her makeup — a perfect balance of delicacy and passion.

Wilkinson, Zandberg and others are experimenting with coating compounds such as a clay named kaolin, which essentially coats grapes to help prevent smoke from penetrating the skin.

The cloth and kaolin are distinctive of Maroon culture, while the marks evoke scarification.

Neither kaolin clay nor a mix of neem and karanja oil significantly reduced damage on young apple trees, researchers reported in the Journal of Entomological Science.