John Haigh believed he had concocted the "perfect murder," until forensic science caught up to him in 1949 Sean Neumann is a reporter at PEOPLE. He has been working at PEOPLE since 2019.

Glycolic acid is a substance that chemically exfoliates a person’s skin by dissolving dead skin cells and oils. Glycolic acid may also help boost collagen production, and support skin moisture.

Long-chain aliphatic dicarboxylates (e.g., 1,18-octadecanedioic acid, among others) are accessible via catalytic conversions of biobased (e.g., plant and algae oils or microbial metabolites) ...

Among these flavor substances, eight exhibited up-regulated, while three were down-regulated. Notably, the oil-related substances hexadecanoic acid methyl ester and the aroma-related substances ...