• Anna Solana, science journalist

    Diamonds for the skin

    16 Jun Diamonds for the skin

     

    Sources:

    Cosmetics Design

    For several years diamond-dust creams have been sold as an outrageously expensive treatment used by celebrities to ensure they walk the red carpet with a fabulous complexion. Now, Asian scientists say they have managed to produce diamonds inexpensively in their laboratory — making this luxury skin care fad potentially more affordable.

     

    The labels of creams containing diamond dust promise a smoother, younger skin from the first application, claiming that this gem has exfoliating properties that stimulate collagen production and help conceal wrinkles and blemishes. Marketing makes these texts not very different from those for other creams based on less exclusive ingredients. What is different, however, is the price of these exclusive creams, clearly aimed at the pockets of those who can afford the luxury. Read More

  • Fede Montagud, editor

    Biological deodorants?

    6 Jun Biological deodorants?

     

    Sources:

    Science Daily

    Deodorants and antiperspirants may reduce or hide the smell emanating from the armpits after a hard day's work or a workout, but no product can completely eliminate body odour. However, a recent discovery could help improve the products currently available in the market.

     

    A few years ago, Chris Callewaert, a researcher at the University of Ghent (Belgium), suggested that, since body odour is not always a matter of hygiene, it had to stop being a taboo subject. There are more bacteria in our armpits, remember, than there are humans on the planet. And some people simply accumulate more of the microorganisms responsible for the decomposition of sweat molecules, and so they smell worse. Callewaert referred mainly to bacteria from the genus Corynebacterium, at that time considered to be primarily responsible for body odour. Read More

  • Anna Solana, science journalist

    Sun damage continues after dark

    31 May Sun damage continues after dark

     

    Sources:

    Scientific American

    It may take a few hours for you to realise that you got sunburned while sunbathing. Similarly, the mutations that ultraviolet (UV) radiation can cause in DNA and that lead to the dreaded skin cancer continue for several hours after you’ve left the beach or the mountains and the sun has gone down.

     

    Researchers at Yale University – led by Douglas E. Brash, a professor of radiology and dermatology – have published a study in Science that demonstrates that melanin, the pigment that darkens the skin to protect it from harm inflicted by UV rays, also has its downside. Certain components of this pigment are involved in the onset of DNA lesions that can cause the mutations responsible for melanoma – which continue for up to four hours after sun exposure has ended. Read More

  • Josep Orellana, science journalist

    The skin’s circadian rhythms

    26 May The skin’s circadian rhythms

     

    Sources:

    Journal of Biological Rhythms

    Humans, without being aware of it, have an internal biological clock that controls many of their bodily functions. The skin also has these circadian rhythms and organizes its activities according to the hours of the day and the night to be more effective. This way we can know when is the optimum moment to apply a cosmetic product on the skin.

     

    A healthily functioning human body relies on internal biological rhythms and patterns. These circadian rhythms are controlled by an "internal clock", located in the brain, that modulates the metabolism of organs and tissues 24 hours a day. The science that studies these processes is called chronobiology. Scientific studies have demonstrated how our skin cells are governed by circadian rhythms that directly affect cell regeneration in the epidermis. Read More

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