What is the difference between soap and soap? Why use soap instead of soap to disinfect and wash hands?

The PH value of soap is neutral or slightly acidic, which is suitable for human skin. It contains the essence and nutrients or drugs needed by human body. However, soap is only used for decontamination. The PH value is alkaline, which will damage human skin, so it is mostly used for washing clothes.

Soap is too alkaline and irritating to skin and mucous membranes. For example, after soapy water spills into eyes, it will make eyes ache, photophobia and tears. It can be seen that soap is more suitable for washing clothes, and should be used as little as possible when taking a bath. Soap can be divided into alkaline, acidic and neutral. Alkaline soap has strong detergency and is suitable for people with oily skin. Neutral soap has little irritation to skin and is suitable for people with neutral and dry skin. Acid soap has poor detergency, but it has certain skin care function and is suitable for children.

In the market, all kinds of toiletries are dazzling. In addition to the soap that the old people yearn for, new things such as soap, shower gel and even bath salts and bubble baths are also within reach. The composition and performance of various bath products are different, and how to choose the bath products that suit you is also very particular.

Soap can be said to be the most traditional bath product in China. It is a higher fatty acid salt obtained from animal and vegetable oils through some chemical reactions, and its main component is sodium stearate. Some soaps also add water softeners, such as sodium phosphate, sodium carbonate and sodium silicate, so the alkalinity of soap is too large and it is irritating to skin and mucosa. For example, after soapy water spills into eyes, it will make eyes ache, photophobia and tears. It can be seen that soap is more suitable for washing clothes, and should be used as little as possible when taking a bath.

The main components of soap are sodium fatty acid and surfactant, and it also contains 1%- 1.5% essence. Generally, butter, sheep oil and coconut oil are used as raw materials, and they are refined, decolored and deodorized before making soap. Soap is an improved product with fine texture and strong detergency. Due to the addition of spices and colorants, the color and fragrance have been improved.

Soap can be divided into alkaline, acidic and neutral. Alkaline soap has strong detergency and is suitable for people with oily skin. Neutral soap has little irritation to skin and is suitable for people with neutral and dry skin. Acid soap has poor detergency, but it has certain skin care function and is suitable for children.

Shower gel belongs to chemical synthetic detergent, and the surfactant accounts for 15%-35%. Some builders are added, including phosphate, sodium carbonate, essence, enzyme and other components, as well as foam accelerator, foam stabilizer, thickener and integrator. Good quality bath lotion is rich and stable, mild in nature, does not irritate skin and eyes, has sufficient decontamination ability, and the skin is not dry after bathing, which is very popular among young people. Compared with soap, the degreasing power of bath liquid is weak, but some people are allergic to some additives.

Most soaps and baths are alkaline, while human skin is neutral and acidic. Proper use of some bath products can remove oil and dandruff from the skin and make people feel refreshed and comfortable. However, bath products will also take away normal sebum when removing dirt, which will make the skin dry and tight, and even itchy all over. The skin itself has the function of neutralizing acid and alkali, and a small amount of alkaline bath products will not cause harm to the human body, and the temporary discomfort after bathing will disappear after a while. However, if you often take a bath, or use strong alkaline bath products for a long time, it will damage the stratum corneum of the skin and accelerate the evaporation of water in cells. In addition to making the skin dry and itchy, it can also cause excessive keratinization of hair follicles. Therefore, if the skin is not too oily, it is best to choose a neutral bath and soap. Strong alkaline bath products can irritate the skin and cause allergic skin diseases. In the process of use, you should try to reduce the time that bath lotion and soap stay on your body and rinse off the foam as soon as possible.

In addition, it is best to choose products with less perfume or pigment for bath products, so as to avoid the skin from being unusually sensitive to ultraviolet rays due to long-term stimulation by perfume or pigment. Unsaturated fatty acids in soap are prone to oxidative rancidity and should not be stored for too long.