• Núria Estapé, science journalist

    The facts about skin hydration

    19 Jun The facts about skin hydration



    Skin Therapy Letter

    All the cells in our body need water to survive and multiply; the cells in the skin are no exception. Pharmacy, beauty centre and perfumery windows typically display hundreds of different skin moisturizing products. Who doesn’t use a moisturizer? But how does a moisturizer work if the skin is virtually impenetrable? Knowing where and how moisturizers work can help us choose the product that best suits our skin type.


    The skin tends to dry out more and more as the years go by. So moisturizers are high up in the ranking of bestselling dermocosmetic products. Each time we apply a moisturizer to our skin we are helping the outermost layer of the epidermis protect us against environmental aggressions. This protection, in turn, helps the skin cells carry out the metabolic processes that keep the skin alive and healthy. Moisturizers also reinforce homeostasis, that is, maintenance of the body’s internal balance in the face of external changes in humidity and temperature. Read More

  • Susana Andújar, chemist

    Understanding labels: What’s in my shower gel?

    23 Mar

    Most of us use shower gels for hygiene and daily skin care. There are hundreds of brands and thousands of packages, colours, textures and fragrances. Unless we are experts, reading labels raises many doubts. What are all these ingredients and what effect do they have on our skin?


    The main action of body and facial hygiene products is to remove the dirt accumulated on our skin. We consider a good hygiene product to be one that cleans us and produces abundant foamy lather while not irritating the skin or mucous membranes. In addition to this primary function, depending on the ingredients, gels may also have antiseptic, moisturizing or stimulating effects. But do we really know what’s in our shower gel? Read More

  • Laura Chaparro, science journalist

    The ‘acid touch’ of the largest human organ

    24 Nov

    Research has revealed that human skin is more acidic than was previously thought. To keep skin healthy and hydrated, use of less alkaline soaps and cosmetics is recommended.


    The skin, the largest organ of the human body, measures two square metres in size. However, when we think of the most important organs, we always think of the heart or brain, overlooking this fine sheath that completely encloses us. The skin is our main barrier against external agents, preventing viruses, harmful bacteria and mites from entering our bodies. Read More