patrick.net

Don't protect you?

They cause cancer!

But the same can be said about most personal care products.

Studies show that people who brush without toothpaste, have better teeth than toothpaste users

Everyone buys qtips to jam in their ears, even though jamming qtips in your ears only causes harm

Everyone puts baby powder on the babys bum. Adults use it on their crotch and butt to stay fresh and dry. This causes cancer.

How about Lavender baby oil? Cancer!

Most of all the crap people waste money on, in the name of better bodily health, causes harm. But at least they have healthy people like me to pay ungodly sums of money to health insurance companies, so they can lie to themselves that it will fix their brokenness

We try to use products where we can read the ingredients on the label, and even understand what they are. I saw the study on the Johnson & Johnson baby shampoo, and talc powder recently, no mames(not sure what the proper English translation would be).

Dan8267 says

sunblocks-arent-really-as-effective-as-they-say/

Dan, your video link doesn't seem to say what you say. I tried to click through, but the site was loaded with so many tracking cookies and so much cross-scripting that I gave up on trying to watch the video. Based on past articles on this topic, I am guessing they are talking about the diminishing returns above SPF 30. For example, SPF 90 might not really protect better than SPF 30.

Sunscreens provide really obvious protection against sunburn, so your OP headline is obviously incorrect.

There is also good evidence that sunscreen can reduce the risk of certain types of skin cancer, although there remain questions about the nanoparticles used in some sunscreens with SPF above 30, for example what happens if those nanoparticles are applied to an open wound and get inside somehow.

This thread shows again you tend towards a binary view, like turning up the contrast on a copier to 100%, everything either black or white. Life has many shades of grey, and different colors too, and "aren't really as effective as they say" does not imply they "don't protect you."

curious2 says

I am guessing they are talking about the diminishing returns above SPF 30.

The consumer reporter stated that many SPF 30 sunscreens don't offer SPF 30 protection. They based that statement on a study they conducted in which they applied the SPF 30 sunscreens to test subjects, had them tan, and then measured redness the next day. One SPF 30 sunscreen from CVS was rated as SPF 8 by them. That's a huge difference, especially if you are trying to avoid skin cancer.

curious2 says

This thread shows again you tend towards a binary view, like turning up the contrast on a copier to 100%, everything either black or white.

I don't see how the fact that many sunscreens are less effective than their official rating counts as black or white thinking. It's purely a factual statement verifiable by repeatable experimentation.

http://www.m.webmd.com/melanoma-skin-cancer/news/20160517/sunscreen-spf-report-2016

As long as Equate and No-AD work good, I will be fine.

Dan8267 says

many sunscreens are less effective than their official rating

If your headline had said that, then I would not have objected. Unfortunately, your OP headline said something quite different. I responded to what you said originally, not what you hadn't said yet.

Dan8267 says

One SPF 30 sunscreen from CVS was rated as SPF 8 by them. That's

...one example, not "many," and besides even SPF 8 protects twice as well as SPF 4 and remains 8 times better than nothing. The diminishing returns at higher SPF levels tend to result from the product getting removed by perspiration or even wind: under conditions where skin would burn in 20 minutes, SPF 30 might mathematically extend that to 10 hours, but the product might come off sooner than that for other reasons.

curious2 says

Dan8267 says

many sunscreens are less effective than their official rating

If your headline had said that, then I would not have objected.

OK, I'll concede the phrasing wasn't perfect. I should have said "many sunscreens don't protect you as much as their rating states".

curious2 says

SPF 30 might mathematically extend that to 10 hours

The video says that all sunscreens must be reapplied every few hours to remain effective.