Society of Cosmetic Chemists of Great Britain 1967 DIPLOMA EXAMINATION Borough Polytechnic PAPER I (Monday, 19th June 1967) Candidates should answer FIVE questions from not less than FOUR sections. SECTION A 1. Outline the main functions of a shampoo. Describe the steps you would take in the laboratory to ensure that a detergent was suitable for inclusion in a shampoo. Give a typical formulation for a clear liquid cosmetic shampoo showing clearly the function of the main components. 2. Describe in detail the structure of the hair with particular reference to its chemical constitution. SECTION B 3. Give an account of the various types of mascara. In each case, discuss the formulation of the product, listing the ingredients used and, if possible, give a typical formula. Finally, give an evaluation of the advantages and disadvantages in use of each type of mascara. 4. Give an account of modern lipstick manufacture, paying particular attention to the following points: (a) Incorporation of colours into the base (b) Colour correction (c) Moulding and flaming (d) Quality control 699

7OO . . . 10. JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS SECTION C Describe in general terms how an aerosol hairspray works. Indicate what changes in the product would affect the type of spray produced and describe how you would improve a product giving a very coarse, wet spray. A handcream is to be packed in a polythene tube. Describe what tests you would do in order to choose between two alternative external lacquers that have been suggested as a coating for the tubes. Also describe briefly how you would determine the approximate shelf life of the chosen pack. SECTION D Give an account of the chemical methods of controlling micro organ- isms used in the disinfectant industry. How would you assess the efficiency of a named germicide under laboratory conditions? Write descriptive notes on four of the following: (a) Bacterial cell (e) Lysozyme (b) Dematophytes (f) Fungicides (c) Antibiotics (g) Gram stain (d) Q.A.C.'s (h) Ecology of yeasts SECTION E Describe in detail, using appropriate diagrams, the structure of a normal human tooth. Define dental caries and outline its mechanism giving as much supporting evidence as you can. What are the main types of shaving product? Describe the different types giving a typical formulation for each and considering the functional differences between them. List, in order of importance, the properties you consider the 'ideal' shaving product should have. PAPER II (Wednesday, 21st June 1967) Candidates should answer FIVE questions from not less than FOUR sections. 1. SECTION A Give one example (chemical formula and name) of each of the following types of detergent--nonionic, cationic and ampholytic.