The journal
40 articles on skin, the ingredients of our care products and the rules we apply, each backed by at least two published sources.
Skin and ingredients
Colloidal oatmeal, the best-documented soothing ingredient
Ground very finely, oats form a veil that protects the skin and calms tightness. It is one of the rare plant ingredients whose effect is recognised by a health authority.
Plant glycerin, the most studied moisturising ingredient
Discreet on labels, glycerin is nevertheless the moisturising ingredient that dermatology research knows best.
Aloe vera: what science confirms, and what it does not
Aloe vera is everywhere. Its real effects are more modest than its reputation, but they exist, and that is what counts.
Olive oil, squalane and sunflower: what the studies say
Not all plant oils are equal for the skin. One study even showed that a very popular oil could weaken the skin barrier.
Hard water and tight skin: what the studies show
After a shower in a city with hard water, the skin feels tight. It is not just an impression: dermatology research has measured it.
Squalane, the emollient that speaks your skin’s language
Our skin makes squalene itself. Olive squalane is its stable version: that is why it softens without ever feeling heavy.
Dry skin in winter: what air humidity really changes
Cold is not the only culprit. Dry air, outdoors and in heated rooms, is what weakens the skin barrier most.
Your skin on a plane: the driest air of your trip
In flight, cabin air is often drier than desert air. Your skin feels it on arrival, and your hotel shower can make up for it.
Why a scent instantly takes you back to a stay
A smell can bring back a memory more vividly than a photograph. That is the very idea behind our three scents.
Good habits
The skin barrier, simply explained
Everything our care products do revolves around a layer of skin thinner than a sheet of paper. Understanding it explains why skin feels tight, and how to prevent it.
Sulphates and gentle cleansers: what happens in the shower
A shower gel does more than lather: it also removes some of the skin’s lipids. It all depends on the cleansing agents it contains.
Skin pH, and why your soap matters
The surface of the skin is slightly acidic. An overly alkaline soap upsets this balance; a gentle one respects it.
Why apply your lotion to skin that is still damp
The best moment to moisturise is the three minutes after a shower. Dermatologists have a name for this gesture.
Hands washed twenty times a day: how to protect them
At the hotel, at the office or at home, our hands are washed far more often than the rest of the body. They pay the price.
Hair and hard water: what the studies really show
Hard water is often blamed for damaging hair. The studies are more nuanced, which is good news.
Detangling without breakage: why conditioner is not a luxury
Most broken hair breaks during styling, when it is wet. One gesture is enough to prevent it.
Travel light: the pouch that goes everywhere
Liquids are limited in the cabin. Packing your pouch well avoids surprises at security, and on arrival.
How benefits are measured
How skin hydration is measured
“Moisturises” should not be an impression. Dermatologists measure the water in the skin with precise instruments, and our claims will be held to them.
Water loss through the skin, a key indicator of a healthy barrier
Skin with a strong barrier lets little water escape. That loss can be measured, and it says a lot about what a care product does.
For hoteliers
Hoteliers: phase out miniatures before 2030 without spoiling the experience
The ban takes effect on 1 January 2030. Establishments that move early choose their system; the others will have it forced on them.
Why a hotel’s online rating directly affects its rates
Guests read reviews before booking, and studies show that a better rating lets a hotel charge more without losing bookings.
Responding to reviews: what the research recommends
Responding to reviews improves reputation, provided it is done well. Marketing research has measured the effect.
What a hotel can still say about its environmental commitment
Since 27 September 2026, “eco-friendly hotel” no longer passes. Here is what remains possible, and how to prove it.
Green Key and the EU Ecolabel: the two environmental labels for hotels
Two recognised labels let a hotel prove its approach. Your guest amenities count towards them.
For aparthotels and holiday lets
Holiday lets in France: what the 2024 law and the EU regulation change
Tax, registration, energy performance: the rules for short-term rentals have changed a great deal. The essentials, plainly.
Getting your holiday let classified: why it has become an advantage
Star classification reassures travellers, and it is now treated more favourably for tax than no classification.
On Airbnb almost everyone has five stars: how to stand out
When almost every rating is excellent, details and trust are what make guests choose one home over another.
Cleaning between guests: choosing effective, labelled products
Between stays, time is short. Cleaning products must be effective, safe for guests and easy to justify.
End of miniatures in 2030: are holiday lets affected?
The ban targets the accommodation sector broadly. For lets run on a professional basis, the answer is probably yes.
Rules, labels and quality
The end of hotel miniatures: why, and what Europe gains
From 2030, small single-use hotel bottles disappear from the European Union. We chose never to make them.
Since 27 September 2026, a green claim must be proven
“Eco-friendly”, “environmentally friendly”: these vague words are now banned in the European Union when no proof supports them.
Why our wood is traceable to its plot of origin
The EU deforestation regulation requires proof that wood does not come from destroyed forest. We apply it without waiting for it to concern us.
Why our care products and fabrics are PFAS-free
Nicknamed “forever chemicals”, PFAS have been banned in France in cosmetics and clothing since 1 January 2026.
Fragrances and allergens: what changes on labels
A 2023 European regulation greatly extends the list of fragrance substances that must appear on labels. We apply it from launch.
Why we require furocoumarin-free bergamot
Bergamot gives Le Matin its freshness. But the raw oil contains molecules that can mark the skin in the sun.
Why natural care needs to be well preserved
An open bottle in a warm, humid bathroom is an ideal place for microbes. The safety of a care product starts with its preservation.
“Of natural origin”: what ISO 16128 really says
“Natural” has no legal definition. An international standard nevertheless makes it possible to calculate precisely how natural a formula is.
The EU Ecolabel for cosmetics, a demanding label
Created by the European Union and checked by independent bodies, the Ecolabel is one of the few official labels for everyday care.
COSMOS: what the natural cosmetics label guarantees
Ecocert, Cosmebio and other European bodies founded a common standard. Here it is, plainly.
Why our bottles have a metal-free pump
A recyclable bottle can become non-recyclable because of a single spring. Design-for-recycling rules explain why.