Blueing snowflake antiperspirant

I just read that tiny spikes of stainless steel kill bacteria [link] I think microcrystalline cellulose that is like a koosh ball will have many tiny points that kill bacteria.

This could be used in consumer products, possibly antiperspirants to kill bacteria, thus reducing odor. Another possibility is to create a chemically harmless form of wet wipes with pointy cellulose to wipe things off with.

Originally I thought that wooden cutting boards killed bacteria with microslivers but could not find a reference. I did find a reference that this works with stainless steel, so might work with microcrystalline cellulose.

If it needs to be metal, perhaps some dispersion, similar to laundry blueing (Iron), or the stainless steel equivalent of blueing could be cheap yet sufficiently pointy.

Another possibility is to make the little pointy things out of a nutrient metal like Mg or Zn besides Fe or microcrystalline cellulose. Some antiperspirants already have Al as an ingredient.