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Detailed examination of the unsaponifiable material from the skin wax of newly born babies has shown that the saturated aliphatic alcohols contain a high proportion of branched-chain compounds, and the aliphatic α,β-dials consist almost entirely of branched-chain compounds. The sterol fraction consists of cholesterol, and a minor amount of an unidentified sterol. The hydrocarbon fraction consists entirely of squalene.
DT Downing (Sun,) studied this question.