Discovering Cosmetic Science
Discovering Cosmetic Science

Author: Stephen Barton

Publisher: Royal Society of Chemistry

Published: 2020-09-23

Total Pages: 256

ISBN-13: 1788017137

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Welcome to this ‘novice’s guide’. At last a book that explains the real science behind the cosmetics we use. Taking a gentle approach and a guided journey through the different product types, we discover that they are not as superficial as often thought and learn that there is some amazing science behind them. We shall uncover some of the truths behind the myths and point out some interesting facts on our way. Did you know? Vitamin E is the world’s most used cosmetic active ingredient. At just 1mm thick, your amazing skin keeps out just about everything it’s exposed to – including your products! A ‘chemical soup’ of amino acids, urea, mineral salts and organic acids act as ‘water magnets’ in the skin keeping it naturally moisturised. Discovered centuries ago, iron oxides (yes, the same chemicals as rust) are still commonly used inorganic pigments in foundations. A lipstick is a fine balance of waxes, oils and colourants to keep the stick stable and leave an even gloss on your lips.

Perfumery
Perfumery

Author: Steve Van Toller

Publisher: Springer Science & Business Media

Published: 2013-04-17

Total Pages: 281

ISBN-13: 9401725586

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THE SENSE OF SMELL The nose is normally mistakenly assumed to be the organ of smell reception. It is not. The primary function of the nose is to regulate the temperature and humidity of inspired air, thereby protecting the delicate linings of the lungs. This is achieved by the breathed air passing through narrow passageways formed by three nasal turbinates in each nostril. The turbinates are covered by spongy vascular cells which can expand or contract to open or close the nasal pathways. The olfactory receptors, innervated by the 1st cranial nerve, are located at the top of the nose. There are about 50 million smell receptors in the human olfactory epithelia, the total size of which, in humans, is about that of a small postage stamp, with half being at the top of the left and half at the top of the right nostril. The receptive surfaces of olfactory cells are ciliated and extend into a covering layer of mucus. There is a constant turnover of olfactory cells. Their average active life has been estimated to be about 28 days.