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Can microbial contaminated shampoo cause scalp irritation and discomfort?
If a shampoo is contaminated with microbes during production or filling, can it cause scalp irritation and discomfort?<div>
If yes
when would user feel this irritation?
How long would this irritation or discomfort last?
And contamination with which microorganisms can cause scalp irritation from shampoo?
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2 Replies
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The functional complaint would be infection rather than discomfort/irritation per se. Relevant microbial toxins would probably not have an effect topically so any perceived effect would need infection.
There are data in context of leave on context products and “normal” folks, but not much of anything for rinse off. In context of substantial immunocompromise, it was ~2 days. https://academic.oup.com/jid/article-abstract/158/3/655/2190564
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Thanks A lot
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