Live data from Hacker News

Benzene detected in many sunscreen products

valisure.com

121–130 of 309 posts

Re: Benzene detected in many sunscreen products

#121

Earlier quoted context omitted.

Does volatility imply constituents? A quick search shows that oxybenzone is a compound containing two carbon rings.

Benzene is used as a precursor for many solvents (in addition to being one itself). IIRC, many things are washed with benzene derivatives and that's where a lot of contamination concern is.

It sounds like manufacturers should just extend the time the substrate is on the rotovap to purge the benzene.

Re: Benzene detected in many sunscreen products

#123

I don't understand why people are so eager to slather chemicals on their skin, when we evolved with the sun and it's not hard for most people to avoid sun burn. You just have get sun exposure on a somewhat regular basis (healthy to do anyway) and acclimate between seasons (ie, don't go abruptly from no sun to all the sun).

I live at altitude (~8000 ft) and have very fair skin. I burn within 20 minutes of being in direct sunlight. So, I’m not sure what it is I’m supposed to do.

Wear a gardening/fishing type hat, wear long sleeve shirts that are cool breathing, and wear jeans/pants throughout the summer. I was out gardening for 7 hours straight this past Sunday in 86 degree weather with high UV index and by wearing the type of clothing to cover your skin you'll be able to stay out for hours without burning. Also you'll of course want to take measured breaks and cool downs. Look at how people have to dress in middle-Eastern countries for a reference point. Keep most the skin covered. This way, you may only need to apply any sunscreen to the tops of the hands/fingers.

Re: Benzene detected in many sunscreen products

#124
post #45

Earlier quoted context omitted.

Not sarcasm. After driving electric for a while (used are affordable... at least until the last couple months when the price of used cars went through the roof), the smell of gasoline seems especially pungent.

Funny you say that because I specially like the smell of gasoline, kind of like smell of glue or diesel exhaust. I know, kind of weird but I know a lot of other people who are in the same boat.

Some people are actually turned on by the smell of gasoline somehow

Re: Benzene detected in many sunscreen products

#125
post #85

I'm quite surprised that some mineral sunscreens contain benzene too... I thought the only use of benzene would be as a reactant in the synthesis of some of the chemical sunscreens only.

It's also used to wash substances. If it was used for that it sounds like perhaps they just didn't evaporate the solvent for long enough after the wash.

Re: Benzene detected in many sunscreen products

#126

Earlier quoted context omitted.

I think what OP is suggesting is to go out 1 min the first day, 2 mins the second day, etc, until you have built up enough melanin in your skin and have a natural defense against it.

Is there any basis to this theory, at all, in science?

Of course there is. It's called acclimatization to UV. Humans, plants, animals are all living beings exposed to solar radiation.

Re: Benzene detected in many sunscreen products

#127
post #84

Earlier quoted context omitted.

> Johnson and Johnson - which just payed out on a case relating to cancer from baby-powders I asked this question in another post and did not get a reply. The US links sited state no evidence for talc causing cancer. A search of the NHS website also suggests no clear evidence [1]. Cancer Research (a respected UK charity) give a layman's summary (albeit focusing on ovarian cancer), stating no clear evidence and pointi…

>The US links sited state no evidence for causing cancer. It's benzine. It's a known carcinogen, no need for empiricism here.

The links are about talcum powder, not sunscreen. Totally separate type of product that has nothing to do with benzene.

Re: Benzene detected in many sunscreen products

#128
post #31

What if skin cancer was actually caused by sun screen? Wouldn't that be ironic, don't ya think?

Well that’s what this is saying, some sunscreens contain unacceptably high levels of carcinogens. It’s not a huge logical leap to go from there to some people getting skin cancer from the sunscreen. That doesn’t mean you aren’t also at risk of getting skin cancer from excess sun exposure.

It's sort of a shame when there are perfectly non-carcinogenic methods for avoiding the sun. Wear long-sleeves and and big hat.

Re: Benzene detected in many sunscreen products

#129

I don't understand why people are so eager to slather chemicals on their skin, when we evolved with the sun and it's not hard for most people to avoid sun burn. You just have get sun exposure on a somewhat regular basis (healthy to do anyway) and acclimate between seasons (ie, don't go abruptly from no sun to all the sun).

In New Zealand in summer the burn time gets down to below 10 minutes. Light clothing isn’t enough to protect skin.

I have burnt a child though their t-shirt. I have burnt my eyes and have burnt my skin rather too often.

Even vaguely light skin gets burnt with a short duration exposure in January or February.

I think you are under-appreciating people fierce it gets.

Re: Benzene detected in many sunscreen products

#130

I don't understand why people are so eager to slather chemicals on their skin, when we evolved with the sun and it's not hard for most people to avoid sun burn. You just have get sun exposure on a somewhat regular basis (healthy to do anyway) and acclimate between seasons (ie, don't go abruptly from no sun to all the sun).

We evolved to be fertile in about 15 years then die after rearing young. There is no fitness advantage to being resistant to skin cancer and living into your silver years. You will have already bred and passed on your skincancer susceptible genetic information to your offspring by the time it kills you. Evolution isn't the story of perfect, it's the story of just good enough to make progeny.
Post reply on HN