Zhihu Hot List
Latest recorded position: #18 on Jul 30, 2026, 9:07 PM CST.
There are not enough retained observations to calculate a rank change.
Lay's chip production waste allegedly relabeled as "hair powder" and sold on the market; is using it to produce edible starch compliant, and are there food safety risks?
乐事薯片生产废料被洗白成「毛粉」流向市场，用「毛粉」生产食用淀粉是否合规？是否存在食品安全问题？
ThreadEast first recorded "Lay's chip production waste allegedly relabeled as "hair powder" and sold on the market; is using it to produce edible starch compliant, and are there food safety risks?" on Jul 30, 2026, 9:07 PM CST. It has been observed on Zhihu Hot List, with less than one hour between the first and latest recorded appearances.
What the trend data tells us
The English title describes the topic of the source listing. Its appearance in a ranking measures attention within that platform; the ranking alone does not explain the cause of a spike or verify the underlying claim.
This stable URL remains available after a topic leaves a live ranking. Observation span is elapsed time between sightings, not continuous time on a chart. Platforms use different ranking and heat systems; their metrics are not added together.
Original evidence
Source listings
#18Source metric: 99 万热度
Original source