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Report
Princeton Consumer Research lab tested all eight sunscreens that failed SPF claims
ABC NEWS (Australia)
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7/4/2025
A consumer group Choice review shows Princeton Consumer Research carried out tests for certification for at least eight sunscreens that fell short of their advertised SPF50 claims.
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00:00
We went back to the sunscreens that were tested by Choice and found that at least eight of
00:09
the ones that underperformed in the Choice testing had all used one particular overseas
00:14
lab to get their original SPF certification before they were allowed to be sold in Australia.
00:20
That lab is called Princeton Consumer Research.
00:24
We got our hands on some of those SPF test results and we ran them past some experts
00:28
both here in Australia and overseas and they pretty much unanimously found that they had
00:33
some questions and concerns about those results.
00:36
To understand what they were saying you sort of have to know a little bit about SPF testing.
00:41
Usually there's about 10 test subjects that are used and they have some UV radiation exposed
00:47
to some skin with some sunscreen on it and some skin that doesn't have sunscreen on it
00:51
and then those readings are used to calculate an SPF number for each of the test volunteers.
00:56
Now experts say with 10 people you would expect those results to vary a little bit but in
01:00
a lot of these labs results there was a lack of variation in those.
01:04
So one of the test reports for example had nine volunteers that all got exactly the same
01:09
SPF value down to the decimal point.
01:11
In some of the other reports it was eight that had the identical result and so experts have
01:17
said that that's a little bit surprising.
01:18
They have been careful to say that it's not impossible to have identical results lining up
01:22
like that and it is possible that that could happen but they couldn't explain it.
01:26
One of the experts that I spoke to said it's unusual to see them lining up that cleanly
01:30
and he'd be asking the lab you know how did they get those results.
01:34
We did go back to the lab and they said that it is uncommon to have them lining up in that
01:40
way but it does happen and that's what's happened in the case of the test reports that the ABC
01:45
has seen but it did say that you know for a high-performing product in a test environment
01:51
you know that can happen and that their process their processes are robust and verifiable.
01:57
Yeah really interesting. I gather your investigation has also thrown up more details
02:02
about one of the company's technical directors. What can you tell us?
02:07
So these SPF test reports usually have a principal investigator that signs off
02:11
on the report and on the a lot of the reports that we saw from Princeton Consumer Research
02:16
that person was a man called Barry Drewitt. In 2010 he was disqualified from being a company
02:22
director in the UK for eight years for his role in a previous testing firm. That firm Uriderm Research
02:29
went into liquidation in 2008 with debts of more than half a million pounds. Separately to that,
02:34
Mr Drewitt was accused of fabricating clinical trial data in 2006 and 2007 and was charged over that
02:41
in 2011. However the UK regulator didn't present any evidence in court on those charges and they
02:47
were thrown out and the judge ordered the jury to find Mr Drewitt and his co-defendants not guilty
02:52
and the ABC is not inferring any wrongdoing in relation to that. When we contacted Mr Drewitt about
02:57
it he was emphatic that any wrongdoing from that matter you know inferring that would be deeply misleading
03:03
and that none of this has anything to do with any bearing on the company that he currently works at which
03:09
is Princeton Consumer Research which is the lab that we're talking about today. Okay Rachel what do
03:14
you think it means for customers? Look I think it means that we need to look to the experts on this.
03:21
I mean I think people are pretty passionate about their sunscreens. That's something that's very clear
03:25
from the stories about sunscreens that we've seen over the last few weeks and that's a good thing because
03:29
Australia has very high rates of skin cancer. The Therapeutic Goods Administration, the TGA, is the body
03:36
responsible for regulating sunscreens. They require that sunscreens go and get this SPF testing done
03:41
before they're sold in Australia but they don't actually have any oversight of the third-party labs
03:45
that do that so it'll be interesting to see with this confusion around SPF results you know what what
03:50
action can be taken there. Some of the sunscreen brands have told us that they are going to another
03:55
lab altogether to get their sunscreens tested again and I think that indicates that they're taking it
04:00
pretty seriously but I think probably for consumers the most important thing is that don't throw out
04:07
your sunscreen. You should still be using sunscreen even if you've got a sunscreen that is you think
04:12
maybe not SPF 50. Institutions like the Melanoma Institute are so keen for Australians to know that
04:19
the difference between SPF 50 and SPF 25 is not as great as many people would think. It still provides
04:25
protection. The most important thing is to make sure you put enough on which many Australians don't do to
04:30
reapply it regularly to wear a hat and sunglasses and long sleeves and seek shade and keep wearing sunscreen.
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