Current location - Education and Training Encyclopedia - Graduation thesis - The history of detergents or cosmetics "exceeds 3000 words"
The history of detergents or cosmetics "exceeds 3000 words"
The appearance and use of cosmetics was a long time ago. The earliest record of using cosmetics came from Egypt, about 3750 BC.

"Everyone loves beauty", and human beings have been pursuing cosmetics to beautify themselves since ancient times. The development history of cosmetics can be divided into the following four stages (also called four generations):

(1) The first generation used natural animal and vegetable oils for simple physical protection of skin.

That is, all kinds of oils and fats from animals, plants or minerals without chemical treatment are directly used. Ancient Egyptians used animal and vegetable oils, mineral oils and plant flowers in religious ceremonies, mummy preservation and personal skin care and beauty care of imperial nobles more than 4,000 years ago. The ancient Romans not only beautified and maintained the skin, hair, nails and lips, but also used Naples as a perfume manufacturing center to obtain pleasant fragrance and prevent insects in the wardrobe from eating it. The earliest perfumes were camphor, musk, sandalwood, lavender and clove oil.

From the 7th century to12nd century, Arab countries have made great achievements in cosmetics production, represented by the invention of processing plant flowers by distillation, which greatly improved the output and quality of essential oils. At the same time, cosmetics in China have also developed by leaps and bounds. There are records of thrush and lip-pointing in the ancient book Hanshu. In Qi Shu Yao Min, the powder with clove fragrance was introduced. Curry written by China and Han Yanzhi in Song Dynasty is the earliest fragrance monograph in the world.

② The second generation is cosmetics based on oil-water emulsification technology.

18, 19 After industrial revolution in europe in the century, chemistry, physics, biology and medicine got unprecedented development, and many new raw materials, equipment and technologies were applied to cosmetics production. Due to the development of surface chemistry, colloid chemistry, crystallization chemistry, rheology and emulsification theory, dielectric surfactant was introduced and HLB value method was adopted to solve the key problem of selecting emulsifier correctly.

Under the guidance of these scientific theories and people's practice in the future, cosmetics production has undergone tremendous changes, from the original primary small family production in the past to a new professional science and technology. It is on this basis that China's cosmetics industry has become the fastest growing and most popular industry in China's light industry. Even the famous FDA in the United States is considering changing its name to FDCA.

③ The third generation is cosmetics extracted from various animals and plants.

The cosmetics are added with the essence of deep-sea fish protein, Hormoues, etc. extracted from the skins and viscera of natural plants or animals such as Gleditsia sinensis, fruit acid and papaya. Supercritical CO2 extraction is an advanced extraction method, which improves the yield and extraction purity of effective substances, thus making them salty. Lingpin has been popular abroad for forty or fifty years, which makes it possible for people to pursue whitening, acne, freckle and wrinkle removal. Until now, some of these cosmetics are still very popular.

Functionalization; Lingpin, a kind of cosmetics, is also called therapeutic cosmetics, and sometimes it is also called quasi, which means it is medical cosmetics and drugs.