Hydration & Barrier
Skincare during the change of season: how to update your routine
In autumn and spring, the routine is not rebuilt from scratch: one step is changed a week, hydration first, then the acid steps. A…
Articles on this topic
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Hydration & Barrier
Winter skincare routine: barrier support in cold, dry weather
Cold weather and dry, heated indoor air put the skin barrier under strain in winter. How to adjust cleansing, the hydration layer and the…
Sensitive Skin
What is allantoin and what does it do? A soothing supporting ingredient
Allantoin is a supporting ingredient often used in soothing formulas: where the evidence remains limited, how it differs from panthenol and its place in…
Ingredient Glossary
What is saccharide isomerate (Pentavitin)? A sugar-derived humectant
Pentavitin (saccharide isomerate) is a humectant derived from sugar. How it differs from hyaluronic acid, whether it can be used instead of it, its…
Hydration & Barrier
Serum or cream? Texture, layering and the right choice
The difference between serum and cream, when one is enough on its own, and night cream versus day cream. A selection table by skin…
Sensitive Skin
What is Centella asiatica (CICA)? Its use in soothing skincare
CICA, gotu kola and Centella Asiatica Extract all refer to the same plant. We explain what centella is, the limits of the cosmetic evidence…
Ingredient Glossary
What is panthenol (pro-vitamin B5)? What does it do in skincare?
Panthenol (pro-vitamin B5) is a supporting ingredient used to support hydration and the skin barrier. We explain how it differs from dexpanthenol, where the…
Ingredient Glossary
What are ceramides? Their role in the skin barrier and in skincare
What do ceramides do in the skin barrier, what names do they appear under on labels, and what does “2% ceramide complex” mean? With…
Hydration & Barrier
What is the skin barrier? How to tell if it is weakened and how to support it
What the skin barrier is, how to tell when it is weakened and how to support it, with a decision table showing which products…
Skin Type
Sensitive skin care: how to introduce active ingredients
How to build a basic routine for sensitive skin, and in what order and at what frequency to introduce active ingredients. It also covers…
Skin Type
Dry skin care routine: a step-by-step guide to hydration and the barrier
How to cleanse dry skin, how to layer hydration and whether acid products and products with oils can be used, with a morning and…
Ingredient Glossary
What is hyaluronic acid? Molecular weight and 8D hyaluronic acid
Hyaluronic acid is a humectant that attracts water, and its molecular weight determines how far it penetrates the skin. This article explains what 8D…