Is it harmful to wash underwear with soap for a long time

Washing underwear with soap for a long time will make it hard and yellow.

Underwear is close-fitting clothing, ordinary soap is alkaline, and hand washing is easy to irritate the skin. If you don't clean it, the chemicals left on underwear will also irritate the skin, and the alkaline substances will cause some damage to the clothing fibers, and underwear is easy to yellow, harden and age.

What happens when underwear is washed with soap for a long time? Soap is a general term for fatty acid metal salts. Broadly speaking, fatty acid salts obtained by saponification or neutralization of oil, wax, rosin or fatty acid with alkali can all be called soap. Soap is also called washing soap, metal soap and compound soap, including laundry soap, soap, liquid soap, fatty acid hardening oil, glycerin and other related products.

Soap can be dissolved in water and has the function of washing and decontamination. Soap contains not only higher fatty acid salts, but also fillers such as rosin, water glass, spices and dyes. Structurally, higher fatty acid sodium molecules contain nonpolar hydrocarbon groups and polar antelope groups.