There are two possible causes.
The first is that our product is defective and your product may be one of them.
Please contact us at "info-new@suzuki-kikoh.com" and describe the symptoms of the problem with the product that caused the problem.
The second is an unbalanced reduction of the internal gas due to usage conditions.
Since the nozzle inside the can is slightly longer than the bottom of the can, the nozzle may point upward when the can is tilted. If the nozzle is used in this condition, only the gas will be reduced unevenly. (The mass of the oil and fat is heavier than similar products from other manufacturers, making the phenomenon more likely to occur.)
The internal mechanism is the same for all aerosol filling companies, and since they are often used tilted, shaking the nozzle before spraying is the best way to prevent problems from occurring.