• Fede Montagud, editor

    Slimming creams don’t burn fat

    5 Jul Slimming creams don’t burn fat




    Slimming creams promise what consumers want to hear as summer draws near: they’ll burn off fat and the kilos in record time. However, no scientific studies support their effectiveness. In the USA, some reducing cream brands have received heavy fines for misleading advertising.


    In 2002, a well-known firm presented a cream that claimed to slim by stimulating the sympathetic nervous system through smell. The cream flew off the shelves. And not because of its price. Six months after international launch, the company had already sold a million units. Slimming creams sell. Especially if presented with tempting promises and with literature that people cannot interpret. Read More

  • Rosa Taberner, dermatologist

    Psoriasis is not contagious

    30 Jun Psoriasis is not contagious



    Medicine Net

    Acción Psoriasis

    Psoriasis is a chronic condition which predominantly affects the skin and develops in about 2% of the population. Its psychological impact is great as it sometimes leads to social rejection, mainly due to other people’s ignorance of the disorder.


    Psoriasis is a chronic inflammatory disorder that affects the skin, nails and sometimes the joints. Around 2% of the population is affected. Psoriasis is caused by defective activation of a type of blood cell (T lymphocyte) that normally takes care of the defence system. The skin cells renewal process – which normally takes 28-30 days – speeds up to 3-4 days for psoriatic lesions. The excess cells accumulate on the skin surface and produce the characteristic appearance of red, raised lesions with whiteish flakes. Read More

  • Anna Solana, science journalist

    Cosmetics for ‘selfies’

    25 Jun Cosmetics for 'selfies'



    Cosmetics Design USA

    Pigments that mimic Instagram filters and that blur imperfections, creams with photoluminescent lighting and diffusers that deceive the lens and create the perfect complexion for Facebook, Twitter or a video conversation via Skype or Facetime... Cosmetics are adapting to the social networks. And new skin care and makeup products are taking the fashion for selfies into account.


    This is about more than just technology. In fact, optical modifiers – which conceal skin imperfections and irregular contours (fine lines, age spots and large pores) by the diffuse reflection of light – have been around for several years. Social networks, however, have meant that they are now centrally placed on shop shelves. These filters are essential to deceiving the eyes and mitigating the effects of ageing. Some products only include ingredients that modify how light is reflected. Read More

  • Susana Andújar, chemist

    Allergens in cosmetic products

    We have known of skin allergic reactions associated with cosmetic products for many years. And each year, hundreds of studies add further information about the safety of ingredients. As a result, new regulations and limitations on use are constantly emerging. Which ingredients are the most allergenic?


    Health authorities have published numerous lists of ingredients whose allergenic potential is known. But as well as considering an ingredient’s facility for eliciting an immune reaction, we also need to consider its frequency of contact with the skin and mucous membranes. Both these factors – allergenic potential and application frequency – are the triggers for most cases of undesirable reactions produced by the use of cosmetic products. Read More