Cosmetic Science has developed greatly since the publication of the 8th
edition of this textbook in 1974. Although the first part of this volume
still consists of chapters about product preparations in alphabetical
order, each product category has been revised and updated by a
specialist. An outline of the biology, structure and function of skin,
hair, teeth and nails and the reasons for the need for cosmetics are
given in those dealing with the relevant preparations. Throughout, the
word Cosmetics includes toiletries and thus all products which protect,
cleanse, adorn, and perfume the human body, and combat body odour and
perspiration. The 'f' spelling for the element 'sulfur' and its
derivatives has been used following the recommendations of the
International Union of Pure and Applied Chemistry (IUP AC) and the
decision taken by the Royal Society of Chemistry (RSC) and the British
Standards Institute (BSI) to use 'f' instead of 'ph' in all their
publications. This stems from the derivation of the use of the 'f' from
Latin and its use in England until the 15th century.