29 Questions
Which type of fats are combined with glycerin and known as tri-glycerides?
Vegetable fats
What effect does hydrogenation of unsaturated fatty acids have?
Improves color and eliminates odor
In cosmetics, which oil is used as a solvent for eosin and imparts spreading quality?
Castor oil
Which oil is rich in phytosterol, lecithin, and vitamins A, B, C, and E, making it valuable for body massage?
Avocado oil
What is the main characteristic of ceresin?
It is a purified crude ozokerite
Which acid is also called vitamin F and occurs in some fats?
Iso-linoleic acid
What is the main reason waxes are used in cosmetics?
All of the above
What is the key difference between saturated and unsaturated fatty acids?
Saturated fatty acids are solid at room temperature, while unsaturated fatty acids are liquid at room temperature
What is the physical state of oleic acid at room temperature?
Liquid
What is the main use of myristic acid?
It is used as a constituent in soaps and shaving creams
What is the purpose of the saponification value of fatty acids?
It measures the amount of alkali required to saponify the fatty acids
What type of pH do emulsions produced by cationic emulsifiers tend to have?
Acidic
Which type of emulsifier does not ionize?
Non-ionic emulsifiers
What properties should preservatives in cosmetics have?
Cheap
What is a common use of perfumes in cosmetics?
Enhance the fragrance of the product
Which type of chemicals are typically used as preservatives in cosmetics?
Esters of p-hydroxy benzoic acid
Which category of perfumery materials are musk, civet, and ambergus commonly classified under?
Animal source
Which of the following is NOT a characteristic of non-ionic emulsifiers?
Tendency to ionize
What is the general trend in the usage of perfumery materials due to their high cost?
Increasing usage
Which range of volatility on a scale of 1-100 do musk-based perfumes typically fall under?
60-100
Why is it recommended to add perfume into a cream or lotion during the cooling stage of the manufacturing process?
To avoid heating effects
Which group of chemicals among the following can cause skin irritation according to the text?
Terpenes, phenyl acetic acid, hydroxycitronellol
Why is it essential to use pure water in the preparation of cosmetics?
To ensure product stability
What is the primary use of linseed oil in sunburn preparations?
To prevent erythema
Which type of lecithin is obtained from soybean?
Vegetable type
Which property of triethanolamine (TEA) soaps makes them suitable for use in cosmetics?
They are perfectly neutral and non-irritating
What is the primary advantage of using cholesterol over lanolin in cosmetic products?
Cholesterol lacks the unpleasant odor and stickiness of lanolin
Which statement about the two main types of bentonite is correct?
Sodium bentonite absorbs more water than calcium bentonite
What is the primary function of bentonite in cosmetic formulations?
To absorb water
Test your knowledge on waxes used in cosmetics, including their properties and functions in cosmetic preparations. Learn about the different roles waxes play in forming water-repellent films, acting as thickening agents, and improving the texture of cosmetic emulsions.
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