• Susana Andújar, chemist

    Cosmetic labels, true claims?

    16 Mar Cosmetic labels, true claims?

    Cosmetic ads in newspapers and TV refer to marvellous effects and properties, "miraculous" in some cases. This is indeed a world of illusions ai??i?? yet sometimes we wonder what truth there is in those ads and labels. Although most people are not aware of this fact, there are strict rules that regulate what should and should not be claimed on cosmetic labels.


    Wavy, silky hair, clean, glowing skin, no wrinkles or cellulite, how wonderful! Shopping or watching TV, itai??i??s easy to begin believing that our skin and hair will quickly respond to a few cosmetics and gels. Shop windows, advertising, marketing and labels are all designed to persuade us to believe such claims. But manufacturers are obliged to be very cautious about the properties they claim for their products, as otherwise they will break the law. Read More

  • Susana Andújar, chemist

    Daily care of oily skin

    11 Feb Daily care of oily skin

    Our choice of cosmetics should be based on knowledge of our skin and its needs. Products exist that are specifically formulated for the care and protection of each skin type and each life stage. The daily care information and tips below are aimed at people who have very oily skin.


    We usually develop oily skin in adolescence due to age-related hormonal changes (with androgens playing a very important role), which lead to increased sebum secretion and, frequently, acne. Over time the excess oil production will slow down and the skin's appearance will improve. Sometimes the problem arises from the use of very comedogenic (favouring acne) cosmetics or products that are not suitable for oily skin. The prevalence of acne in adolescence is very high; some 70%-80% of teenagers affected, with little difference between boys and girls. Read More

  • Susana Andújar, chemist

    Daily care of dry skin

    24 Dec Daily care of dry skin

    Understanding our skin and its needs should be the basis for our choice of cosmetics, so if you have very dry skin, you need to use productsAi??that are specifically formulated to treat dry skin and that also take into account your life stage. Below we provided some basic guidance for people with very dry skin.


    Dry skin has various causes, among them, genetics, aggressive drugs, overexposure to cold or sun, natural ageing, etc. But dryness is always the result of two factors: lack or excess loss of water (dehydration) and deficient sebum secretion by the sebaceous glands. A healthy, elastic, comfortable-feeling skin requires an optimal level of water in the stratum corneum. Certain components in dry skin are altered, but can be restored by suitable cosmetics. Hydration is the best way to maintain youthful skin and delay the onset of signs of ageing. 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?

    Our skin comes into daily contact with some kind of cosmetic preservative. Soaps, gels, creams, foams, lotions, perfumes ai??i??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