Sense About Science said dodgy claims about cosmetics were definitely on the rise last year with terms such as organic, natural and chemical being misused with abandon.
Cosmetics bucked the overall trend as the science charity praised celebrities for making fewer unsubstantiated and misleading scientific claims.
However, comments made by fashion designer Stella McCartney in Time magazine following the launch of her Organic skin care brand Care were picked up on.
The daughter of Beatles star Paul McCartney told the magazine that 60 per cent of what you put on your skin is absorbed into the body.
In response, pharmacologist Gary Moss from the University of Hertfordshire wrote to Sense About Science pointing out that in fact only around 1 per cent of an applied compound is absorbed.
Stella McCartney also raised alarm bells when she said many skin care products contain the same petrochemicals as antifreeze.
Dominic Williams from the University of Liverpool said the anti-freeze ingredient propylene glycol is indeed used in moisturisers, sexual lubricants, and anti-bacterial lotions.
However, the chemical is used in cosmetics and anti-freeze because it is highly versatile and there is no evidence to suggest that it is dangerous, added the scientist.
Another celebrity exposed for making misleading claims was Sarah Benny who presented a UK documentary on Channel 4 called "How toxic are you?" and talked about "lovely make-up and moisturisers which don't have any chemicals in them."
Ian Mabbett from the University of Swansea countered the claim saying that to be chemical free you have to experience a total vacuum because chemicals are everywhere and everything.
Chemist Derek Lohmann went further telling Sense about Science that the programme "How toxic are you?" contained a general lack of scientific fact.
Sense About Science has taken direct action to reduce public exposure to pseudo science spouted by celebrities.
Last year it distributed a booklet entitled 'Science for Celebrities' to management agencies, publishers and celebrity haunts.
As part of the information campaign Sense About Science also gave out a phone number for celebrities to call to enable them to check their facts before making scientific claims.
