Society of Cosmetic Great Britain Chemists of 1968 DIPLOMA EXAMINATION Borough Polytechnic PAPER I (Monday, 17th June 1968) Candidates should answer FIVE questions from not less than FOUR sections. SECTION A 1. Clearly distinguish between the following product types giving typical formulae wherever possible. (a) Clear and creme shampoos (b) Temporary and permanent waving lotions (c) Hair conditioners and hair sprays (d) Oxidation and nitro hair dyes. 2. Describe in detail the various stages of hair growth from initial formation to final hair fall. Discuss the importance of sebum in relation to hair. . SECTION B Describe typical raw materials used in the manufacture of face powder and indicate the purpose for •vhich each raw material is used. Give brief details of the normal manufacturing processes employed for the manufacture of loose face powders. (a) Give the general formula of a solid fragrance of the soap-gel type and brief details of the equipment used in the manufacture of such a product. (b) Write a short account of the various types of face masks available indicating the special features of each type.

6O JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS SECTION C 5. Write brief notes on FOUR of the following:- (a) Sachets (b) Roll-on containers (c) Polyethylene tubes (d) Aluminium tubes (e) Squeeze packs. t3. Describe what tests you would do in order to determine the shelf life of toothpaste in an aluminium tube. What tests would you do initially to determine whether or not a particular tube is satisfactory for the formulation? SECTION D 7. Write (a) (b) (c) (d) (e) (f) (g) explanatory notes on FOUR of the following:- Dermatophytes Staphylococcus aureus Bacterial growth curve Water sterilisation The yeast cell "Glove juice" test Cationic detergents. 8. Give an account of the physical methods of controlling the growth of micro-organisms. Which of these methods could be used in preventing (a) aerial contamination, (b) water-borne contamination? SECTION E 9. Give a definition of dental caries and outline the possible causes of tooth decay. Outline the various approaches that have been made with regard to the control of caries. 10. Distinguish between eccrine and apocrine sweat glands. Give an account of the factors affecting sweating and outline the various theories on the mechanism of the antiperspirant activity of materials such as aluminium chlorhydrate.