This is a normal phenomenon in the use of soap. Soap will be stained with water when it is used, and then the water will be absorbed by soap. After use, the water in the soap will evaporate. However, due to the uneven distribution of water entering the soap, the degree of contact between different parts of the soap and the air is different, and the degree of evaporation of water will be different, which leads to cracks in the soap. However, this phenomenon will not affect the efficacy of the product, and consumers can use it with confidence.