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#21
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Sunscreen for bicycling
On 8/10/2018 4:52 AM, Sepp Ruf wrote:
John B. Slocomb wrote: On Fri, 10 Aug 2018 00:36:32 +0000 (UTC), Ralph Barone wrote: Joerg wrote: A very fair-skinned cycling friend uses SPF100 and puts it on generously. Even after a 5h ride in the glistening sun his skin remains very white so the sun blocker must be protecting because it prevents even a minimal tan. If memory serves me properly (and it sometimes does), early sunscreens blocked only one of UVA and UVB (I can't remember which), with the result that you didn't tan, but your skin got damaged anyway. If modern sunscreen has a similar deficiency in protection, you could find that increased sunscreen use doesn't correlate with lower skin cancer rates. Alternatively, what if sunscreen itself is a carcinogen? I don't remember UVA or UVB but when I was going to school in Miami a friend had some sort of sun block that "prevented sun damage but allowed tanning". The idea of tanning was, I suppose, because everyone else on the beach had a nice tan and I guess the "white skins" didn't want to stand out. It allowed the existing cells to tan by passing UVA, but blocked UVB. According to the London Telegraph's reporting, some modern sunscreen norms require that a UVA protection claiming label must be backed up by a UVA PF of at least one-third of the stated SPF (UVB) rating. Boris Johnson was wrong indeed: Letter-boxes (taped shut) are best! https://www.huffingtonpost.co.uk/entry/boris-johnson-defended-by-leading-imam-over-burka-comments_uk_5b6bf966e4b0530743c71456 But as rbt's readers exclusively die from the effects of wrong gear selection, lightweight component failure, bike route muggings, closed brewpubs, wildlife attacking, styrofoam lids or missing styrofoam lids, the only rbt-relevant sunscreen quality is whether it dissolves expensive grips and other plastic materials (including black lycra matters) and, maybe, if it can be used as an emergency chain lube. Hey, don't go bringing chain lube into this discussion! That's going to _really_ make it get ugly! -- - Frank Krygowski |
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#22
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Sunscreen for bicycling
On Fri, 10 Aug 2018 10:52:41 +0200, Sepp Ruf
wrote: if it can be used as an emergency chain lube. When I was sagging a century tour, we did use sun-tan oil to loosen up a stuck rear derailer. The rider had a clean-up to do when she got home, but she did finish the ride. -- Joy Beeson joy beeson at comcast dot net --- This email has been checked for viruses by AVG. https://www.avg.com |
#23
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Sunscreen for bicycling
On Fri, 10 Aug 2018 10:52:41 +0200, Sepp Ruf
wrote: the only rbt-relevant sunscreen quality is ... if it can be used as an emergency chain lube. Yes. Not perhaps a *good* chain lube but nonetheless. It's got oily type stuff in it. Jobst Brandt's ride reports include mention of the use of sunscreen as an emergency grease for a dry hub bearing on his son's bike, on one of his trips to the Alps. |
#24
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Sunscreen for bicycling
On 8/10/2018 7:12 PM, Tim McNamara wrote:
On Fri, 10 Aug 2018 10:52:41 +0200, Sepp Ruf wrote: the only rbt-relevant sunscreen quality is ... if it can be used as an emergency chain lube. Yes. Not perhaps a *good* chain lube but nonetheless. It's got oily type stuff in it. Jobst Brandt's ride reports include mention of the use of sunscreen as an emergency grease for a dry hub bearing on his son's bike, on one of his trips to the Alps. I wonder if Jobst's son still rides. -- - Frank Krygowski |
#25
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Sunscreen for bicycling
Frank Krygowski wrote:
On 8/10/2018 4:52 AM, Sepp Ruf wrote: According to the London Telegraph's reporting, some modern sunscreen (....) and, maybe, if it can be used as an emergency chain lube. Hey, don't go bringing chain lube into this discussion! That's going to _really_ make it get ugly! That was my prime concern, too. But you underestimated the magic of Joy's stories. And Tim's mention of Jobst in the Alps, evoking a peaceful image of him servicing a hub with a bottle of Piz Buin (instead of just drilling a spoke into a sunbathing marmot.) Always an honor. |
#26
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Sunscreen for bicycling
On Thu, 9 Aug 2018 00:05:16 -0000 (UTC), bob prohaska
wrote: Does anybody have suggestions for sunscreen to wear while bicycling? My cancer doctor said to use zinc sunblock on fresh scars. (My current scar is under my hatband, so all I use is E-oil and a white linen do-rag.) I'm currently using Kroger's knock-off of Neutrogena 70; when it runs out, I plan to start snitching my spouse's Neutrogena 100, so as to use it up faster. I used to use a cheaper sunblock on my arms and legs, but when it ran out, I began to put the same stuff everywhere. I usually coat only the outside of the calf muscle on my legs, because that is where I got a brown streak when I could ride that long. I rub my arms together like a cricket, and put an extra layer on what sticks out of my sleeves. (In hot weather, I wear long linen sleeves -- and on my last few rides they got soaking wet without spitting water on them.) I still have brown, speckled arms. And there's a patch on the back of my hand even though I put on another layer of 50-SPF sunscreen every time I take off my gloves. The stick sunscreen is running out and I haven't yet found another that fits into my pocket. I recently realized that I can put lotion into a lip-salve box -- if I can find one that isn't identical in every way to the box I carry A&D in. I used to carry hand cleaner in my tool kit. A&D cleans hands just fine, and has a lot of other uses. Also, nowadays, I fix flats with my cell phone, so I don't need a grease remover. -- Joy Beeson joy beeson at comcast dot net http://wlweather.net/PAGEJOY/ --- This email has been checked for viruses by AVG. https://www.avg.com |
#27
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Sunscreen for bicycling
On Saturday, August 11, 2018 at 7:29:00 PM UTC-7, Joy Beeson wrote:
On Thu, 9 Aug 2018 00:05:16 -0000 (UTC), bob prohaska wrote: Does anybody have suggestions for sunscreen to wear while bicycling? My cancer doctor said to use zinc sunblock on fresh scars. (My current scar is under my hatband, so all I use is E-oil and a white linen do-rag.) I'm currently using Kroger's knock-off of Neutrogena 70; when it runs out, I plan to start snitching my spouse's Neutrogena 100, so as to use it up faster. I used to use a cheaper sunblock on my arms and legs, but when it ran out, I began to put the same stuff everywhere. I usually coat only the outside of the calf muscle on my legs, because that is where I got a brown streak when I could ride that long. I rub my arms together like a cricket, and put an extra layer on what sticks out of my sleeves. (In hot weather, I wear long linen sleeves -- and on my last few rides they got soaking wet without spitting water on them.) I still have brown, speckled arms. And there's a patch on the back of my hand even though I put on another layer of 50-SPF sunscreen every time I take off my gloves. The stick sunscreen is running out and I haven't yet found another that fits into my pocket. I recently realized that I can put lotion into a lip-salve box -- if I can find one that isn't identical in every way to the box I carry A&D in. I used to carry hand cleaner in my tool kit. A&D cleans hands just fine, and has a lot of other uses. Also, nowadays, I fix flats with my cell phone, so I don't need a grease remover. -- Joy Beeson joy beeson at comcast dot net http://wlweather.net/PAGEJOY/ Well, I can recommend the Neutrogena 100+. Did a long hard ride mostly in direct sunlight yesterday and my tan didn't change at all. |
#29
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Sunscreen for bicycling
On Monday, August 20, 2018 at 12:00:57 PM UTC-7, Joerg wrote:
On 2018-08-20 11:26, wrote: On Saturday, August 11, 2018 at 7:29:00 PM UTC-7, Joy Beeson wrote: On Thu, 9 Aug 2018 00:05:16 -0000 (UTC), bob prohaska wrote: Does anybody have suggestions for sunscreen to wear while bicycling? My cancer doctor said to use zinc sunblock on fresh scars. (My current scar is under my hatband, so all I use is E-oil and a white linen do-rag.) I'm currently using Kroger's knock-off of Neutrogena 70; when it runs out, I plan to start snitching my spouse's Neutrogena 100, so as to use it up faster. I used to use a cheaper sunblock on my arms and legs, but when it ran out, I began to put the same stuff everywhere. I usually coat only the outside of the calf muscle on my legs, because that is where I got a brown streak when I could ride that long. I rub my arms together like a cricket, and put an extra layer on what sticks out of my sleeves. (In hot weather, I wear long linen sleeves -- and on my last few rides they got soaking wet without spitting water on them.) I still have brown, speckled arms. And there's a patch on the back of my hand even though I put on another layer of 50-SPF sunscreen every time I take off my gloves. The stick sunscreen is running out and I haven't yet found another that fits into my pocket. I recently realized that I can put lotion into a lip-salve box -- if I can find one that isn't identical in every way to the box I carry A&D in. I used to carry hand cleaner in my tool kit. A&D cleans hands just fine, and has a lot of other uses. Also, nowadays, I fix flats with my cell phone, so I don't need a grease remover. -- Joy Beeson joy beeson at comcast dot net http://wlweather.net/PAGEJOY/ Well, I can recommend the Neutrogena 100+. Did a long hard ride mostly in direct sunlight yesterday and my tan didn't change at all. Once you have developed a good tan it won't change much any more. Sometimes when working in the yard for a few minutes I get carried away and cut bushes for a couple hours. No sun screen at that time but the tan doesn't change anymore. Since moving to California in the 90's I also don't seem to get sun burns anymore. My ride was out towards the Altemont Pass. If there is enough sun my arms will turn red as if I got a sunburn but they will be brown again the next day. But with that 100+ there was absolutely NO reaction. |
#30
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Sunscreen for bicycling
On 2018-08-20 12:13, wrote:
On Monday, August 20, 2018 at 12:00:57 PM UTC-7, Joerg wrote: On 2018-08-20 11:26, wrote: On Saturday, August 11, 2018 at 7:29:00 PM UTC-7, Joy Beeson wrote: On Thu, 9 Aug 2018 00:05:16 -0000 (UTC), bob prohaska wrote: Does anybody have suggestions for sunscreen to wear while bicycling? My cancer doctor said to use zinc sunblock on fresh scars. (My current scar is under my hatband, so all I use is E-oil and a white linen do-rag.) I'm currently using Kroger's knock-off of Neutrogena 70; when it runs out, I plan to start snitching my spouse's Neutrogena 100, so as to use it up faster. I used to use a cheaper sunblock on my arms and legs, but when it ran out, I began to put the same stuff everywhere. I usually coat only the outside of the calf muscle on my legs, because that is where I got a brown streak when I could ride that long. I rub my arms together like a cricket, and put an extra layer on what sticks out of my sleeves. (In hot weather, I wear long linen sleeves -- and on my last few rides they got soaking wet without spitting water on them.) I still have brown, speckled arms. And there's a patch on the back of my hand even though I put on another layer of 50-SPF sunscreen every time I take off my gloves. The stick sunscreen is running out and I haven't yet found another that fits into my pocket. I recently realized that I can put lotion into a lip-salve box -- if I can find one that isn't identical in every way to the box I carry A&D in. I used to carry hand cleaner in my tool kit. A&D cleans hands just fine, and has a lot of other uses. Also, nowadays, I fix flats with my cell phone, so I don't need a grease remover. -- Joy Beeson joy beeson at comcast dot net http://wlweather.net/PAGEJOY/ Well, I can recommend the Neutrogena 100+. Did a long hard ride mostly in direct sunlight yesterday and my tan didn't change at all. Once you have developed a good tan it won't change much any more. Sometimes when working in the yard for a few minutes I get carried away and cut bushes for a couple hours. No sun screen at that time but the tan doesn't change anymore. Since moving to California in the 90's I also don't seem to get sun burns anymore. My ride was out towards the Altemont Pass. If there is enough sun my arms will turn red as if I got a sunburn but they will be brown again the next day. But with that 100+ there was absolutely NO reaction. Turning red is critical even if it "heals" in a day. I had that as well years ago but somehow not anymore. It all just tans a bit more over the weeks. On of my riding buddies has very white skin, Irish/Scandinavian type. So he uses SPF100 like you do and no tan or burn ever develops. -- Regards, Joerg http://www.analogconsultants.com/ |
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