• Anna Solana, science journalist

    Confirmed: sunscreen prevents wrinkles

    20 Dec Confirmed: sunscreen prevents wrinkles



    Annals of Internal Medicine

    Just over a year ago we published scientific evidence on the effectiveness of sunscreens against wrinkles. Since then the cosmetics sector has included sunscreen in many products, like make-up, with good results. The message is clear: sunscreen is crucial. Always.


    In June 2013, the Annals of Internal Medicine published the results of a major study, conducted in Australia over four years, which underlined that wearing sunscreen daily helps prevent wrinkles. In fact, the study, a milestone for professionals in terms of duration and scope, underlined that a sun protection factor (SPF) of 15 is more effective than taking nutritional supplements, such as beta-carotene, to preserve the skin. Read More

  • Anna Solana, science journalist

    Personalized cosmetics?

    30 Nov Personalized cosmetics?



    Premium Beauty News

    It’s a good marketing idea that also appears to be successful. Products labelled with our name and designed to suit the personal features of our skin, after one or several laboratory tests … photonics technology used to determine what our skin needs at all times. The cosmetics of the future will likely be personalized, but for now they are difficult to produce and expensive.


    A recent market research study in the UK cosmetics market found that, before buying a typical branded product, 47% of adults would be willing to go to a laboratory to obtain a cosmetic product that was specifically designed for their skin. This kind of personalized cosmetic would take into account genetics, allergies, nutrition, climate and sun exposure habits, among other factors. Read More

  • Susana Andújar, chemist

    Preservatives in cosmetics: the good, the bad and the ugly?

    26 Nov Preservatives in cosmetics: the good, the bad and the ugly?



    European Commission

    Our skin comes into daily contact with some kind of cosmetic preservative. Soaps, gels, creams, foams, lotions, perfumes –virtually all cosmetic products require at least one preservative agent to make sure they get to consumers in perfect condition. Some preservatives may be harmful, however, and health authorities legislate continuously for the good of our skin and our overall health.


    The perfect preservative is one whose antimicrobial action inhibits all contaminating microorganisms (bacteria, moulds and yeasts) from cosmetic products. It must also be stable and inert towards other ingredients in the formula and, above all, it must have a profile that allows for safe use in the intended product at the intended concentration. It is often difficult for a single biocidal ingredient to satisfy all these requirements. Often people focus on the most natural ingredients, assuming them to be least toxic. Read More

  • Anna Solana, science journalist

    Can stretch marks be removed?

    31 Jul Can stretch marks be removed?



    EFE Salud

    The term “stria” refers to a line, groove or ridge in a surface. Striae now refer to the marks that appear in the skin when it stretches and tears. Appearing in adolescence, as a consequence of pregnancy and when weight is gained or lost, they are difficult to hide. All kinds of creams and other more drastic solutions to combat them are offered in the market. But is it really possible to remove them?


    When stretch marks first appear, they are reddish or violet coloured but they eventually become whiteish to the point where they seem to be simple scratches. Their name directly reflects their origin in an overstretching of the dermis due to changes in the body. However, they are caused in different ways. In the early twentieth century they were attributed to infections such as tuberculosis or typhoid. Later they were also associated with malnutrition and toxic states. Most contemporary theories link them to hormones, specifically glucocorticoids (cortisol, basically), which affect the formation of collagen and elastin, both necessary to keep the skin elastic. Some experts, in the absence of other evidence, blame the genes. Read More