[HN Gopher] Personal care products disrupt the human oxidation f...
___________________________________________________________________
Personal care products disrupt the human oxidation field
Author : XzetaU8
Score : 175 points
Date : 2025-06-29 17:20 UTC (5 hours ago)
(HTM) web link (www.science.org)
(TXT) w3m dump (www.science.org)
| flint wrote:
| This is why I get outside and sweat every day.
| peanut_merchant wrote:
| Not well versed in the field, what are the basic implications of
| this for health?
| whitexn--g28h wrote:
| The article does not come to any health conclusions, just
| studies the impact on indoor air chemistry.
| PaulHoule wrote:
| In the 1970s there was a lot of talk about 'healthful negative
| ions' and a fad for negative ion generators even though many of
| those also generated hazardous ozone.
|
| Hydroxyl ions are a significant kind of negative ion in the
| atmosphere and they're known to be good because they react with
| and clean out pollutants like methane
|
| https://en.wikipedia.org/wiki/Hydroxyl_radical
|
| https://earthobservatory.nasa.gov/images/144358/detergent-li...
| thaumasiotes wrote:
| How can something be a negative ion generator without
| simultaneously being a positive ion generator?
| giantg2 wrote:
| .
| rpnx wrote:
| That isn't how chemistry works.
| wizzwizz4 wrote:
| Isosaccharinic acid has the same chemical formula
| (C6H12O6) as glucose, which isn't acidic. However, they
| both have the same net charge.
| xvedejas wrote:
| When something is an acid, it dissociates into both a
| positive ion H+ and negative ion (rest of the molecule)
|
| HA = H+ + A-
| westurner wrote:
| FWIU hydrogen plasma in water for hydrolysis would produce OH
| Hydroxl radicals. (and H2O2, O3 (Ozone), and NO_x).
|
| TIL that Hydroxyl ions bind to methane and thereby clean the
| air?
|
| Air ioniser: https://en.wikipedia.org/wiki/Air_ioniser :
|
| > _A 2018 review found that negative air ions are highly
| effective in removing particulate matter from air. [6]_
|
| But the Ozone. Ozone sanitizes and freshens, but is bad for
| the lungs at high concentrations.
| ryukoposting wrote:
| Here's some more research, since I have a tiny ozone
| generator in my fridge and I got worried:
|
| Ozone concentrations as low as 70ppb are hazardous when
| you're exposed to it for several hours [1]. Estimates for
| Ozone's olfactory threshold aren't trustworthy, since you go
| nose-blind to it pretty quickly [2], but it seems like it's
| probably around 20-40ppb before olfactory fatigue sets in
| [3,4].
|
| My takeaway is that Ozone generators for rooms/basements/etc
| are _definitely_ a bad idea. The best-cited olfactory
| thresholds are all in the same order of magnitude as that
| 8-hour hazard threshold, and with nose-blindness being a
| significant factor, you just don 't want to mess around with
| that.
|
| Inside a fridge, though? As long as you don't actually smell
| any ozone when you open the fridge, and you don't just shove
| your head in the fridge for hours on end, I'd think you're
| probably fine.
|
| [1]: https://ozonewatch.gsfc.nasa.gov/facts/SH.html [2]: http
| s://www.ecfr.gov/current/title-21/chapter-I/subchapter-H...
| [3]: https://www.cabidigitallibrary.org/doi/full/10.5555/1960
| 2703... [4]: https://spartanwatertreatment.com/ozone-safety/
| GeoAtreides wrote:
| if only there was a 'Discussion' section in the article, that
| goes over the basic implication of the study results... if
| only.
| braaileb wrote:
| Yeesh, who taught you to debase others.
| parpfish wrote:
| This won't lead to people using less lotion, but it will lead to
| fancy lotions adding "OH precursors" as the new science
| buzzmarketing term
| AnotherGoodName wrote:
| Which is funny since the exact opposite, anti-oxidants, have
| been a fad to add for the past 20years.
| thinkingtoilet wrote:
| You eat anti-oxidants. So unless you're eating your lotions
| this isn't related and can't be the opposite.
| iinnPP wrote:
| Skin absorbs. So it's at least partially related.
| fredfish wrote:
| If an actual nutritionist says you can eat it every monkey
| in a lab coat knows they can sell it as a lotion with
| substantially less work than testing something else.
| woleium wrote:
| Antioxidant supplements provide no benefit, may even be
| harmful. See 2007 meta-analysis by Goran Bjelakovic,
| Dimitrinka Nikolova, Lars Gluud, Rosa G. Simonetti, and
| Christian Gluud, published in JAMA: "Mortality in Randomized
| Trials of Antioxidant Supplements for Primary and Secondary
| Prevention: Systematic Review and Meta-analysis".
|
| https://jamanetwork.com/journals/jama/article-
| abstract/20579...
| robocat wrote:
| A meta-analysis is just a dilution of facts, in the exact
| proportion to have homeopathic efficacy.
| dylan604 wrote:
| The opening paragraph is precisely why so many people have moved
| to natural ingredient products and fragrance free. Some fragrance
| makers have new for formulas with "clean" ingredients, but they
| are still proprietary and come with a "trust us" promise. It's
| interesting to see the specifics of what these products can do
| other than what's advertised on the tin.
| kstrauser wrote:
| [flagged]
| anal_reactor wrote:
| My skin care routine is "I showered in some not-so-distant
| past" and sunscreen. You hit diminishing returns very
| quickly. Showering more than once a week has no health
| benefits, it's just so that other citizens of your
| overcrowded city wouldn't complain about your natural smell.
| iinnPP wrote:
| Not showering for a week means I have a headache all day.
| So evidently not everyone is doing it for someone else.
| perching_aix wrote:
| That doesn't sound normal? Why would you get headaches
| from not showering? Never heard of such a thing.
| cma wrote:
| Could be muscle tension or something helped by the warm
| water
| iinnPP wrote:
| It's not terribly uncommon. My wife also has it. It's
| also related to the length of my hair, where longer hair
| is significantly worse. Presumably it's the oil build up
| as my hair is extremely oily and fine.
|
| edit: I am fully aware that not washing leads to less oil
| build up over time, but I have tried and doctors have
| tried and that boat has sailed.
| perching_aix wrote:
| I'd imagine a hair wash in the sink also does the job
| when in a hurry then? Do dry shampoos work too, or does
| it need a wet wash?
| iinnPP wrote:
| Yes, washing the hair in any capacity works. Unsure about
| dry shampoo.
| xyst wrote:
| Somebody needs to touch grass
| cko wrote:
| But what about dating? The nether regions should be washed
| in anticipation for certain activities. There are no
| diminishing returns for that.
| kstrauser wrote:
| Just date people who've had a bad case of COVID. Problem
| solved!
| jajko wrote:
| All you need is a modest trauma to the nose in right
| direction. Bones shifting a bit will cut forever hair-
| like nerves going from your nose sensors back to brain,
| effectively making you lose the sense of smell. When
| asked some doctor friends they confirmed harm is
| permanent.
| zonkerdonker wrote:
| Ok, so dont shower, and punch my date in the nose. Got
| it!
| immibis wrote:
| Sir this is HN. Nobody is dating.
|
| Also sex is a different thing from dating.
| anal_reactor wrote:
| When you realize that through most of human history
| people married because of teenage sex drive or economic
| necessity rather than emotionally mature relationships,
| then the whole dating thing loses its appeal really fast.
|
| Also, the smell of sweat of someone attractive turns me
| on really hard.
|
| > Babe I love it how you naturally smell
|
| > That's great but I just bought a new generic cherry
| shampoo
| lurking_swe wrote:
| some of us exercise, and have oily skin, and break out with
| acne if we don't shower right away.
|
| some of us live in hot climates where a cold shower
| genuinely feels amazing and cools the body down.
|
| some of us enjoy showering daily, because the bed sheets
| get less dirty that way, which means less laundry to do,
| and reduces my stress.
|
| some of us are married to a lady and want a happy home life
| (lol).
|
| a sample size of 1 (you) does not mean it's true for
| everyone. Just saying. :)
| roughly wrote:
| > it's just so that other citizens of your overcrowded city
| wouldn't complain about your natural smell.
|
| Yes, that's correct. You've cracked the code. People don't
| want to smell you, that's why we shower regularly.
|
| I'd suspect there are other parts of your life where you
| could combine that keen perceptive wit with these
| revelations to perhaps elucidate other social mysteries and
| dilemmas you've faced.
| anal_reactor wrote:
| I honestly think that this is actually valuable insight.
| It's important to distinguish things we do just to fit
| into the society from things we truly want to do. I'm not
| saying we never should do the former, we obviously
| should, but I think it's worth it to be aware of the
| choice. Most people just follow mindlessly the current
| social trends "because everyone does it".
| roughly wrote:
| A conversation I've had with several people is: do you
| want to be right or do you want to get shit done? I
| dabbled in management for a bit, and spending time
| figuring out how different people communicated, how to
| hear and speak to them, and what their motivations were
| meant I could build a team out of anyone. Same here -
| yes, it's all an ape dance, but we're all apes, and if
| you know the dance moves, it's a whole lot easier to move
| through the tribe.
| anal_reactor wrote:
| I want to be right, but I need to get shit done. I take
| part in the social dance to the minimum degree that gives
| me what I need. Regarding the rest of my time, I spend it
| looking for people with whom I can be right. That feels
| way more pleasant than the social dance.
| roughly wrote:
| One thing I'd say about this is that other people will
| have perspectives that you do not that can help you be
| more right if you can hear it from them. You've got one
| life, one set of experiences, one brain, and the same 24
| hours in the day as everyone else. Leverage other people
| - even if they're not "right", they can help you be less
| wrong.
| BugsJustFindMe wrote:
| > _I take part in the social dance to the minimum degree
| that gives me what I need._
|
| I guess if one doesn't want other people to enjoy being
| around them a lot of things become simpler.
|
| > _I want to be right_
|
| Ok, well, framing body hygiene in terms of "health
| benefits" is only right if you don't benefit from others
| enjoying being near you. This is almost never the case.
| 9283409232 wrote:
| I worked with someone with your mindset and he smelled
| horrible in the office to the point where HR had to step in
| and talk to him about hygiene.
| dghlsakjg wrote:
| Your returns are nowhere close to diminishing, even for
| people with close to no physical activity or sweating,
| people can tell if you haven't showered for a week.
| hackyhacky wrote:
| I only use naturally-ocurring radium and free-range poison
| ivy.
| CoastalCoder wrote:
| But is the poison ivy ethically sourced?
|
| I'm wondering if you have its informed consent.
| xyst wrote:
| I see you are a man of culture.
| mirekrusin wrote:
| You're not using mixture of amygdalin from organic apricot
| kernels, coca leaves mixed with unripe seed pods of opium
| poppy? Does wonders.
| riffraff wrote:
| You jest, but there's a ton of people convinced they can use
| rock alum which is natural and so is better than industrial
| deodorants which contain aluminium.
| kstrauser wrote:
| My inner chemistry geek weeps.
| kajecounterhack wrote:
| I'm similarly puzzled by "uncured bacon" which afaik still
| uses naturally occurring nitrites. How they're allowed to
| call it uncured when it's clearly still cured is beyond me.
| PaulHoule wrote:
| I can't use those aluminum containing antiperspirants at
| all -- they violently irritate my eyes if I put them on my
| skin.
| johnyzee wrote:
| The rock alum works better, and I don't think you can get
| it into a different form. The stuff in deodorant is a
| different aluminium compound.
| maipen wrote:
| Unrelated: This is why reading comments is becoming useless.
| People react to the news without opening the article. Its so
| annoying.
|
| Related: This article shows an interesting study but it's hard
| for me to interpret what does this translate to? I think we
| should minimize very complex and synthetic products to our
| bodies. Although sometimes it's necessary when we harm our body
| (e.g. long sun bathing sessions)
| superkuh wrote:
| Cloudflare products disrupt the human ability to read
| science.org articles. The article text available to me:
|
| >Enable JavaScript and cookies to continue
|
| Turning on JS and doing the captchas just results in more
| captchas, forever, with no end. I have emailed science.org
| about this in the past but they only fixed it on the blogs, not
| the main site.
| mfro wrote:
| I have this problem when using the JShelter addon if I enable
| the privacy switches. Your browser is probably resisting
| fingerprinting.
| perching_aix wrote:
| That is very curious, because I have both JS _and_ all
| manners of clientside storage disabled, yet can access the
| site fine.
|
| I guess maybe my CGNAT IP is reasonably well trusted and
| that's the difference?
| userbinator wrote:
| Hint: TLS fingerprinting.
|
| (No problems with accessing this site without JS. You just
| need to make your client look like one of the officially-
| sanctioned browsers.)
| benibela wrote:
| the internet is being ruined everywhere.
|
| This week I wanted to download some old HN front pages on the
| command lines and only got "403 sorry"
|
| although I do not get that now
| heavyset_go wrote:
| > _Although sometimes it's necessary when we harm our body
| (e.g. long sun bathing sessions)_
|
| Zinc oxide and titanium dioxide are basically crushed rocks
| that absorb UV and are used in sunscreens.
| neuroelectron wrote:
| You get what you pay for
| 12_throw_away wrote:
| Heh, is this bad ... who knows? Chemistry, environmental
| chemistry, and biochemistry are absurdly complex and full of
| interlocking Chesterton's Fences. But the profit motive means we
| don't really spend much time looking into them before tearing
| them down.
| EugeneOZ wrote:
| Actually it sounds kinda good.
| fwip wrote:
| Not sure why you got downvoted. The researchers state:
|
| "If we buy a sofa from major furniture company, it's tested
| for harmful emissions before being put on sale. However, when
| we sit on the sofa, we naturally transform some of these
| emissions because of the oxidation field we generate," said
| lead author Jonathan Williams, who heads the study of organic
| reactive species at the Max Planck Institute for Chemistry.
| "This can create many additional compounds in our breathing
| zone whose properties are not well known or studied.
| Interestingly, body lotion and perfume both seem to dampen
| down this effect."
|
| Which, if you're worried about the effects of unstudied
| compounds, lotion will help protect you against.
| ricardobeat wrote:
| That's like saying diarrhea will protect you against
| ingesting unknown poisons. Disrupting natural processes
| rarely comes without unintended side effects.
| fwip wrote:
| Sure, but it depends on what you consider to be "natural
| processes," and what you don't. The oxidation of sitting
| on a plastic^W vegan leather couch is not a "natural"
| process, but sitting on wood probably is. It's also not
| "natural" to be closed up with the results of that
| oxidation for most of the day, as most of our evolution
| happened with plenty of access to fresh air. We
| definitely have evidence that people were using oils and
| lotions for much longer than we've had modern synthetic
| materials or "air-tight" building methods.
|
| The science is definitely still out, but I don't think
| it's unreasonable to think that inhibiting this reaction
| might be beneficial.
| giantg2 wrote:
| With how bad for us the common fragrances are in regards to
| things like cancer risk, endocrine disruption, etc, its
| surprising that nothing has changed. Most products have fragrance
| free alternatives.
| alwa wrote:
| In fact, it was specifically one of those alternatives which
| was under test here:
|
| _"a fragrance-free body lotion containing linoleic acid
| (Neutral, Unilever body lotion for sensitive skin; 0% colorants
| and 0% perfume)"_
|
| Sounds like they blame the phenoxyethanol? Which serves a
| preservative kind of role?
| giantg2 wrote:
| Yeah, my comment was just to add that scents have so many
| other issues than just what's in the article.
| rowanG077 wrote:
| This is the first time I'm hearing they are bad. Could you
| share some research about this?
| amarcheschi wrote:
| At least in the eu there are quite strict rules regulating
| cosmetics. Hell, lilial in perfumes was banned just to stay
| safe because they couldn't determine an "average exposure"
| and went on by banning it in perfumes to reduce what would
| have been the real exposure, even if it wouldn't have caused
| issues by being used in perfumes standalone (so not how it's
| used in cleaning products)
|
| They might not be perfect, of course, and they're always
| improving
| rowanG077 wrote:
| Yes of course, there are a ton of bad substances. But I as
| not aware of something that is. Ubiquitously used, known
| bad and not banned in the EU.
| giantg2 wrote:
| EU is much better than the US for ingredient safety. I'm
| not sure of the EU stuff specifically, but it looks like
| there's still some concerns over some perfume
| ingredients, if not the fragrance itself. You'll probably
| have to do more research yourself.
|
| https://taenk.dk/system/files/2022-01/Whats-that-smell-
| repor...
| giantg2 wrote:
| There's tons more than this, but here's some high level
| stuff. The most concerning part is that some of the 4000+
| fragrances in use are known and suspected carcinogens.
|
| https://health.osu.edu/health/general-health/how-
| fragrances-...
| FredPret wrote:
| I once worked for a large consumer goods company. We had a
| conference about scents.
|
| We saw a clear correlation between richer consumers and a
| preference for subtler scents or even no scent.
|
| This even applied across countries: third-world consumers liked
| aggressive floral scents, but in Northern Europe and North
| America, the scents are way less concentrated and tend to be
| more toward subtle alpine or linen.
|
| All this was 15-20 years ago; today I notice that no soap in my
| house smells like anything at all.
| amarcheschi wrote:
| I'm a perfume fan (hobbyist? I don't know how to name it),
| and I wonder if this still holds. Nowadays, the "luxury"
| brands such as the Arab ones, and even the "western" European
| niche catering to the biggest spenders are making a lot of
| oud fragrances, gourmands, incense perfumes... Basically
| anything thick, dense, almost syrupy. They don't limit to
| this, of course, but ouds became much more common in the last
| years
| omnimus wrote:
| Can you recommend some fragrances or a brand that does some
| contemporary subtle forresty mossy but also is not crazy
| expensive posh branding endeavour?
| amarcheschi wrote:
| I'm not entirely sure I understood your request,
| something foresty? Not a lot into those, anyway
|
| Helan vetiver and rum, don't know if it's available in
| usa. Has a rum note as well as moss, I've definitely
| heard people around me saying it smells like forest, to
| me it's more of a mossy scent
|
| Erbolario Periplo, but it's more Mediterranean bushes
|
| Dsquared original wood
|
| Maybe lalique encre Noire or encre Noire sport
|
| I'd suggest to try them before buying them
| an_aparallel wrote:
| In Sydney. It has destroyed the olfactory field imo. I cant
| stand the ambroxan(?)...it smells like IPA on PCP :/
| amarcheschi wrote:
| Sauvage is a big ambroxan offender, a cold sharp metallic
| note that pierces the brains around the person wearing
| it, who clearly has no brain for damage to be suffered
| (/s)
| washadjeffmad wrote:
| There's a particular Middle Eastern market I visit where
| the cash reeks to high hell of cologne.
|
| It turns out a few of the customers douse their dollars
| with their personal scents to remind everyone who's
| spending money with them, and I suppose to see where it
| might be circulating.
| tyre wrote:
| Personally, I prefer neutral lotions and detergents because I
| wear my own cologne. It could be because
|
| It could also be because we're using more products. If my
| face moisturizer and sunscreen had different scents, that
| would be unfortunate. It would limit my options to those that
| went together.
|
| I don't normally want my face to smell like anything (again,
| cologne) but if I did I would choose only one product that's
| scented. Probably beard oil.
| jopsen wrote:
| > today I notice that no soap in my house smells like
| anything at all.
|
| Same here, and all ja e store branded products certified
| allergy friendly.
| cma wrote:
| > Most products have fragrance free alternatives.
|
| That itself is a big change that took a while.
| giantg2 wrote:
| They've been around for a while, but they were harder to
| find. Even as a kid there was stuff like arm and hammer
| washing detergent that was scent free. Although now there are
| at least 5 free and clear choices at the Walmart.
| drabbiticus wrote:
| For a slightly more digestible take, see
| https://news.uci.edu/2025/05/21/lotions-perfumes-curb-potent...
|
| But really, I wouldn't worry about the result of this study _at
| all_ in daily life. It's quite surprising to me that this would
| be the top HN article at the time of this comment.
| muhdeeb wrote:
| This article has a headline engineered with shock value
| connotations, but when you read it carefully, it takes pains to
| rein the suggestions of the title in as much as possible while
| still stirring the pot. It's a kind of artistry you need to get
| papers published these days.
|
| All that aside, it's an interesting thing to think about but it's
| not a basis for any kind of personal health recommendation and
| the authors state that. I have relevant expertise and this is a
| very complicated area that people routinely want to be boiled
| down into black and white simple advice. What this article seems
| to say is that lotion can affect the oxidation chemistry nearby
| it, but it's not yet known if that is an effect with consequences
| that are on the whole negative or positive.
|
| I would criticize the authors for their use of the word disrupt,
| because of the negative connotation carried by that word when
| talking about human biological systems. They use a softer, more
| neutral word, perturb, to express the same idea later in the
| article, which I think better expresses the idea without an
| emotional tinge to it.
| hackernewds wrote:
| Just posting to not just upvote, but also say that you have a
| very calm thought process and write with clarity
| mannycalavera42 wrote:
| posting to upvote the upvote
| photochemsyn wrote:
| "A commercial lotion composed of aqua, glycerin, Brassica
| campestris seed oil, Butyrospermum parkii butter, ceteareth-12,
| ceteareth-20, cetearyl alcohol, ethylhexyl stearate, Simmondsia
| chinensis seed oil, tocopherol, caprylyl glycol, citric acid,
| sodium hydroxide, acrylates/C10-30 alkyl acrylate crosspolymer,
| sodium gluconate, and phenoxyethanol was chosen for this
| experiment."
|
| Personal health recommendation: You'd be better off rubbing
| down with olive oil or sunflower oil than with that concoction,
| most likely. The ancient Greeks got some things right.
| BugsJustFindMe wrote:
| > _Personal health recommendation: You 'd be better off
| rubbing down with olive oil or sunflower oil than with that
| concoction, most likely_
|
| What evidence can you point to that supports this "most
| likely" assertion that isn't purely naturalistic fallacy?
|
| > _The ancient Greeks got some things right._
|
| The pantheon of capricious gods living on mount olympus?
| Harvesting the sweat of wrestlers to use as treatment for
| genital warts?
| metalman wrote:
| wow!, we are emiting a potent biocidal gas strait through our
| skin!.....it explains so much! and ya, O3 is going to chemicaly
| break almost anything it touches, which will definitly yield some
| bad to have on you stuff if the precursor is just wrong. also ,
| most definitly there is a wide diference in peoples indidual
| chemistry, so this phenominon will join many others in waiting
| for a more nuanced understanding of how human biochemistry works.
| 8bitsrule wrote:
| "the human health impacts of many such chemicals remain poorly
| understood"
|
| The effects of ritual bathing (soap, scrubbing with washcloths,
| etc.) on the skin may also be "poorly understood". Many people
| also wear regularly-washed clothing.
|
| When I look at the laundry-list of chemicals in personal-care
| products (soaps, shampoos) (and in foods ... sometimes, wow!) I
| often wonder how much effort goes into testing all of this gunk.
| amarcheschi wrote:
| >When I look at the laundry-list of chemicals in personal-care
| products I often wonder how much effort goes into testing all
| of this gunk.
|
| A lot of effort
| hiddencost wrote:
| Good news (sarcasm), they laid off all the people responsible
| for that.
| 12_throw_away wrote:
| >> how much effort goes into testing all of this gunk.
|
| > A lot of effort
|
| Into testing the long-term biochemical and environmental
| consequences? lol no absolutely not. Source: I work in this
| field.
| amarcheschi wrote:
| At least in eu, regulation is present to at least try to
| ensure that products are quite safe for the customers and
| for the environment
| thefounder wrote:
| I think there are no long terms and that's the case for
| food as well
| dvh wrote:
| Occasionally when I shower I get this vivid vision: a man comes
| home from hard days work and takes a shower. Grabs his shampoo
| but only squirts out half of his usual amount because shampoo
| bottle is empty, he thinks it will be enough but after applying
| it instantly feels it's not enough, so he grabs his wife's
| shampoo, squirts the second half and rubs it onto his hair. Few
| seconds later his hair bursts into fire because different
| chemicals in two completely different shampoos reacted
| together. How plausible is this scenario?
| tyre wrote:
| I love this website
| mannycalavera42 wrote:
| yeah bro, we besties
| bdangubic wrote:
| I am not bald because of hereditary reason but this! :)
| droopyEyelids wrote:
| This happened to me and the water itself caught on fire
| somehow
| jemmyw wrote:
| I don't think it's very plausible for shampoo but it's
| relevant for toothpaste for sensitive teeth. There's are two
| mechanisms for sensitive teeth, one is to flood the nerve
| with potassium ions using potassium nitrate, i.e. saltpetre.
| The other method is to block access to the nerve endings with
| other chemicals. You could potentially mix toothpaste and get
| your mouth to warm up slightly.
| davrosthedalek wrote:
| No worries, the stuff in the wife's bottle is the same, just
| more expensive.
| PaulHoule wrote:
| Didn't the Joker contaminate personal care products so they
| did in a Batman movie?
| WalterBright wrote:
| I agree. We should go back to the Roman days when clothes were
| washed in urine.
| userbinator wrote:
| This sounds like a good thing, in contrast to the doom-and-gloom
| "scary chemicals!!!11" articles that seem to have flooded
| journals and news in the recent years. I believe it's basically
| saying there is an antioxidant effect from lotions and perfumes.
|
| _Globally, PCP usage is widespread_
|
| Skimmed the article at first, and this made me chuckle. I wonder
| if that was deliberate.
| rsync wrote:
| "I believe it's basically saying there is an antioxidant effect
| from lotions and perfumes."
|
| Which would be of no value.
|
| There is no mechanism - no pathway - for ingested or applied
| "antioxidant" delivery into the cell where we believe we see
| oxidation or damage due to free radicals, etc.
|
| ... _and even if there were_ it would probably have a terrible
| impact because it appears that the oxidation and free-radicals
| are an _essential cell signaling mechanism_ which triggers
| apoptosis.
|
| Which is a fancy way of saying: cells use these tools to kill
| themselves when they are performing badly. You would not want
| to interrupt this process.[1]
|
| [1] https://en.wikipedia.org/wiki/Power,_Sex,_Suicide
| fiatjaf wrote:
| This is impossible to read.
| 867-5309 wrote:
| limonene, linalool, "parfum" are the scourge of this age
| indus wrote:
| Is soap included? I seldom use body soap during a shower.
| Probably once a quarter, when my SO threatens me with
| consequences.
|
| I am not a researcher, but I have a simple evolutionary theory
| that soap was invented in the last few thousand years and became
| a mass-market product after the beginning of industrialization.
|
| If we survived and evolved without the use of something in the
| last few million years, then why is that thing needed?
| sjducb wrote:
| Lots of plants can be used as soap with minimal processing
| (crush the plant in your hand while rubbing it on something).
| It's likely that most of our ancestors used soap and we evolved
| to expect it. Just like we evolved to eat cooked or ground up
| food.
| pandarus wrote:
| jesus
| xeonmc wrote:
| Is your name Richard, by any chance?
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