Cosmetology
Present in the environment at trace levels, cadmium is a heavy metal known for its toxicity. Its potential presence in certain everyday products, including cosmetics, raises questions. Can we really be exposed to it via our skincare routine? Should we be concerned? Let us take a closer look.
The smell of a cosmetic product is often associated with the pleasure of using it. However, not all skincare products are scented. At Typology, some products may have a more raw or plant-like smell, which can sometimes be surprising. Where does it really come from? And should it be a cause for concern? Here, we explain the origins of the scents in our skincare products.
Derived from brown algae, sodium alginate, or “Algin” in INCI terminology, is an ingredient widely used in cosmetics. Valued for its gelling properties, it provides structure to many formulations. But how does it actually act on the skin? Let us examine together the mechanisms and uses of sodium alginate.
A naturally derived polysaccharide, pullulan is increasingly used to improve the texture and performance of cosmetic products. But do its effects go beyond the purely sensory dimension? And what about its safety profile? Find out more here about “pullulan”.
In cosmetics, not all active ingredients penetrate the skin in the same way. Their effectiveness depends in particular on their molecular mass. The well-known 500 Dalton rule helps to explain this phenomenon more clearly. But what does this rule actually mean, and what are its limitations? Read on to learn more about the 500 Dalton rule.
In cosmetic care, the way ingredients are dispersed influences the texture and effectiveness of products. Microemulsions are a specific system that makes it possible to stabilise certain formulations. Their microscopic structure can offer several advantages. What is a microemulsion in cosmetics? Why are microemulsions useful? Learn more about microemulsions here.
Certain eyelash serums designed to promote lash growth contain prostaglandin derivatives, pharmacologically active substances originally used in ophthalmology to treat glaucoma. Their effectiveness on eyelash growth is well known, but several ocular adverse effects have also been reported. In response to concerns raised by their use in cosmetics, European health and scientific authorities have examined their safety. What do current regulatory assessments say about these ingredients? Let us explore this together.
Cetyl Phosphate is a compound used to structure certain emulsions and enhance the sensory characteristics of cosmetic products. Although not widely known to the general public, it directly contributes to the quality of formulations. What exactly is the role of Cetyl Phosphate for the skin and in formulation? We explain everything here.
Preservatives are essential to prevent contamination of water-based cosmetic products. However, their impact on the skin’s ecosystem remains a matter of debate. Can they alter the cutaneous microbiota? Let us take stock.
In light of the skin care sector’s constant evolution, emerging trends and new product launches, structuring a routine can seem challenging. Yet a few simple principles allow you to create a coherent routine tailored to your skin type. Understanding the order of application and product compatibilities forms an essential foundation. At Typology, we favour a science-based approach focused on the essentials, personalised and respectful of the skin. In this article, we present a step-by-step guide to help you learn more about layering skin care products, why mastering this process is crucial, and how to avoid common mistakes.
This is a minor revolution for nail technicians: TPO (diphenyl trimethylbenzoyl phosphine oxide), used in nail varnishes, has been banned since 1 September 2025. Singled out for its toxicity, it now needs to be replaced by safer alternatives. What are the key issues underlying this decision, and how does it affect consumers? Here is more information.
The sun does not recognise borders, unlike regulations. While the European Union permits 28 UV filters, the United States only offers 16 and has not approved any new filters for over twenty years. How can we explain this difference? What is the impact for American consumers? Let's decipher this topic together.
The year 2025 marks a decisive turning point for the sun care industry with the approval by ISO, the International Organisation for Standardisation, of two new SPF testing methods. These approaches, more ethical and less invasive, allow for an equally reliable evaluation of the UV protection offered by sunscreens. Read on for more information about these new standards.
In order to be launched on the market, cosmetics must meet various requirements related to the regulations in force in their country of release. For this, a safety report must be established, concerning among other things the ingredients that compose them. Discover in this article how the safety of skin care ingredients is evaluated.
Cosmetic products, whether opened or not, have a limited lifespan. To protect consumers and limit the risk of skin reactions, it is mandatory for brands to indicate the shelf life on each skincare product. How is this expiry date determined? Let's discover this together.
Emollient agents are key ingredients in many cosmetic formulations, whether they are moisturising creams, hair care products or makeup items. While most cosmetic enthusiasts are aware of their ability to protect and soften the skin, few know that they possess other interesting properties. Let's explore together the various roles of emollients.
Commonly used in the formulation of skincare, haircare, eyelash and nail treatments, film-forming agents play a crucial protective role. But how can we define them? And what exactly is their function? Discover more information here about film-forming agents and their use in cosmetics.
The excitement around a new skincare product can sometimes prevent us from being realistic about its effectiveness. However, depending on the desired benefit, results can take time to appear. So, how long should you follow a skincare routine to see results? In this article, we have examined the average time required for common active ingredients in skincare to work, to help you set realistic expectations.
The formulation of a cosmetic product involves considering various parameters, among which are the desired efficacy, the colour of the treatment, its texture, its scent... The sensory experience is indeed very important for consumers and is notably influenced by opacifiers. What is an opacifier? What is its role? Learn more in this article.
Used in the treatment of surfaces, materials, paints and varnishes, antistatic agents are also favoured ingredients in cosmetics, particularly for formulating hair care products. Discover here the various functions of antistatic agents found in formulation.
Daily care is necessary if you wish to maintain the health and radiance of your skin. Several steps should be anticipated during your facial routine and the application of your various treatments should follow a well-defined order to achieve the best results or even avoid undesirable effects. Indeed, the order of application has an effect on the penetration of active ingredients and therefore on the long-term benefits of the products. Continue reading to discover the appropriate order for layering your facial treatments.
It may not be widely known, but we often find several texture agents in the INCI list of our cosmetics. But what exactly is their purpose? Discover here the various properties of texture agents and why they are so crucial in cosmetic formulation.
The measurement of a cosmetic product's pH is a critical step in its formulation. Indeed, to ensure consumer safety, maintain formula stability, and guarantee the effectiveness of the treatments, it is essential that the product's pH is suitable and falls within a well-defined range. To achieve this, formulators use pH regulators. Discover more information about this family of ingredients here.
Surfactants are among the compounds commonly used to formulate cosmetic care products. While their name may sound intimidating, these ingredients play an essential role. What is a surfactant and what is its purpose? Let's explore the answers to these questions together.
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