How long is the shelf life of soap? Can soap still be used after it expires?

Soap is a skin care product that many of us have used, and we all know that skin care products on the market have a certain shelf life, so let us find out how long is the shelf life of soap? Can I still use expired soap?

What is the shelf life of soap?

Soap has a shelf life. Usually three years. In general, soap is safe to use. However, soap that has exceeded its shelf life is at risk of becoming rancid, and its ability to remove stains will be reduced. If soap is left in a humid environment for a long time, bacteria will grow, leading to skin infection during use. So once you start using it, you should use it up as soon as possible. Soap that has exceeded its shelf life is at risk of becoming rancid (commonly known as "deterioration"). In mild cases, yellow and black spots will appear on the surface of the soap, and in severe cases, oily sweat will appear. The detergency of rancid soap will decrease with the degree of rancidity. It won’t be a big problem if household soap is used for washing clothes and expires, but if it is used for cleansing the face, it is recommended not to use it anymore, because the skin on the face is very delicate, and expired soap may irritate the skin, so it is recommended not to use it anymore.

Can I still use expired soap?

Never use expired soap. Expired soap has the risk of becoming rancid, and the ingredients inside will affect all aspects of the body. In mild cases, yellow and black spots will appear on the surface of the soap, and in severe cases, it will produce oil and sweat. When you use expired soap to wash things, its cleaning ability will decrease with the degree of corruption. The reason for rancidity is that the mixed fatty acids in the soap contain a certain amount of unsaturated fatty acids, which will be oxidized when exposed to air for a long time. On the other hand, the ingredients in the soap will naturally decompose fatty acids and glycerol when exposed to sunlight and air for a long time, causing the formation of calcium soap acid, which has a very unpleasant odor and produces a peculiar smell. As the soap expires, the unsaturated fatty acids in it will extend to other substances, and sometimes cause the moisture in it to gradually dissipate, affecting the subsequent use results. After it expires, it will also produce excessive amounts of toxic and irritating organic matter, which may cause allergies when used on the skin. In addition, the spices in expired soap may also expire. Using such soap to wash clothes or other things will cause an overall odor.

Which brand of soap is the best and most fragrant?

1. Shanghai soap. Shanghai Soap was founded in 1979 and is a brand of Shanghai Soap Co., Ltd. Its popular products are Shanghai Medicated Soap and Shanghai Sulfur Soap.

2. Safeguard. One of the daily necessities brands under Procter & Gamble, it is a well-known personal cleaning and care brand. It was first launched in the United States in 1963 and has been sold all over the world. Its main products include shower gel, soap, hand sanitizer and vitality sports series.

3. Dettol. As the world's leading brand of professional disinfection and sterilization used by the British royal family. It is a British brand dedicated to household and personal care. It is one of the common disinfectants and also the brand name of hand sanitizer. Its star products include clothing disinfectant, disinfectant and shower gel.

4. Lactate. The brand was founded in 1909 and is affiliated to Japan Milk Alkaline Co., Ltd. With its long history and outstanding corporate philosophy, NIU has become a household name in Japan. Its products are mainly milk soap and milk bath products.

5. Bee flower. A shampoo and hair care brand under Shanghai Fenghua Daily Necessities Co., Ltd., founded in 1985. Fenghua’s main products include shampoo, conditioner, shower gel, body lotion, etc. The brand has always insisted on winning the market with high quality and low prices, and has actively participated in the tide of the daily chemical industry. It has now become a national brand that is well-known and loved by the general public in China.

Is it better to wash your face with soap or with facial cleanser?

When it comes to washing your face, soap and facial cleanser actually have their own effects and functions, so there is no need to compare them. After all, what suits you best is the best. Generally speaking, the cleaning function of soap is more convenient, so it is more suitable for teenagers. When choosing soap, you need to choose according to your skin type. Nowadays, many people take very good care of their skin. Every facial care measure is very important. Washing your face is a critical step. It is best to use a facial cleanser that suits you. Different skin types require different cleaning products. You must choose carefully to achieve the best care effect.