Two-and-a-half-year-old Amber Nickol McKeown had head lice. Her mother, Eileen, put the child in a warm bath and massaged Osco Lice Treatment Shampoo into her scalp. Problem solved.

But when Eileen lifted Amber from the tub, she noticed her daughter’s chest had turned red. She called her husband, James, upstairs, and the couple tried bathing Amber in cool water. The little girl’s condition deteriorated quickly. She labored to breathe. Her eyes rolled back in her head, and her skin peeled off in clumps, according to a lawsuit filed by the family.

Amber was rushed from her home in Lester, Pennsylvania, to Fitzgerald Mercy Hospital, where the staff found burns over 60 percent of her body. She was in respiratory distress, and her heart and lungs couldn’t supply her body with oxygen.

On November 4, 2000, within 72 hours of her bath, Amber was dead. After performing an autopsy, the Delaware County (Pennsylvania) medical examiner concluded that the child’s death had been triggered by exposure to a type of pesticide called a pyrethrin and its accompanying impurities, according to the family’s lawsuit.