What are the disadvantages of soap?

1. Long-term use of soap containing triclosan will cause the accumulation of this substance on the skin. When its content is too high, it will lead to hormone disorder in reproductive system and adversely affect the muscle system. Triclosan is more harmful to human kidney than its meager antibacterial effect, and it may cause cancer after long-term use.

2. "Smelly soap", with high alkali content, strong ability to remove oil and scale, is also irritating to the skin. Repeated use can make the skin dry, rough and exfoliate quickly.

3. Carbonized soap, sulfur soap, coal tar soap, boric acid soap, Lysol soap, sandalwood soap and other medicated soaps can also be used for patients with psoriasis. However, if the patient is allergic to a certain medicinal soap, it should be avoided.

Benefits of washing hands with soap:

Hand washing is the cornerstone of public health, and new health behaviors and public health services are the main factors for the rapid decline of infectious disease mortality in rich countries at the end of 19. Washing hands with soap or hand sanitizer is one of the most effective ways to prevent diarrhea (the infection rate is reduced by half), and it is also the cheapest way, just like the isolation and safe treatment of feces and the provision of sufficient purified water. In addition, washing hands with soap can limit the spread of respiratory diseases (reducing the infection rate by a quarter). Moreover, washing hands with soap or hand sanitizer is also a powerful barrier against other diseases (such as eye infections such as worms and trachoma, skin infections such as pustules).