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While many consider scalp and hair oils naturally moisturizing, these oils nourish fungus that contribute to the scaly, patchy scalp condition known as seborrhea, Cotsarelis says.

Early treatment of seborrhea is the best preventive of baldness.

There was evidently much fat in the secretion; there was also seborrhea of the scalp.

Rosacea, popularly known as acne rosacea, is a more severe and troublesome disorder, a true dermatitis with no relation to the foregoing, and in most cases secondary to seborrhea of the scalp.