Why do shoes develop bad odors?
Shoe odor is fundamentally caused by bacteria. When bacteria multiply inside shoes, they produce a distinctive smell. Normally, feet only have eccrine glands that produce odorless sweat. However, when liver function declines due to stress or overwork, ammonia produced in the body ends up in sweat and sebum — this is known as "fatigue odor."
Types of odor
There are two types: a sharp "fatigue odor" caused by ammonia, and a musty "stuffiness odor" caused by isovaleric aldehyde — like a damp cloth. The problem isn't your feet or sweat, but the odor-causing substances themselves.
Types of deodorization
Odor is actually detected when microscopic particles — smaller than pollen — float in the air and attach to nasal membranes. (Unpleasant to think about...) There are three main methods to eliminate odor: deodorization, sensory masking, and chemical deodorization.
Deodorization
Removing odor substances through washing or adsorption. Air purifiers and charcoal are well-known examples. While effective immediately, they don't address the root cause, so they can't eliminate the source of odor.
Sensory masking
A masking method that covers odor with other fragrances. Since the odor-causing substances remain, it can sometimes create strange smells and make things worse. This also doesn't address the root cause.
Chemical deodorization
Eliminating odor substances through chemical reactions — neutralizing alkaline causes with acidic substances and vice versa. Unlike other methods that merely mask odor, chemical deodorization actually sterilizes — directly targeting and removing odor-causing bacteria.
So what does this mean?
Odor is often caused by a complex combination of factors, so doing just one thing won't solve it. A comprehensive approach from three angles is essential.
1. Suppress the generation of odor-causing substances.
2. Remove odor-causing substances.
3. Deodorize the smell.
What happens when you use ROSY LILY Deodorizing Powder?
ROSY LILY Deodorizing Powder fundamentally solves odor problems through chemical deodorization — directly targeting and removing odor-causing substances. By eliminating the cause and sterilizing, it delivers incredibly powerful, long-lasting deodorization.