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Dermatologie

Von ersten Symptomen bis zur Laserbehandlung erklärt dieser Beitrag auf sonrisa alles was man über Rosazea wissen muss.

Beauty

Rötungen im Gesicht: Wann es Rosazea ist und was dagegen hilft

26. Mai 2026
FYI: Das virale Cortisol Face ist kein medizinischer Befund, sondern nur ein Booster für den Algorithmus. Echtes Expertenwissen auf sonrisa zeigt, wie du Schwellungen und Müdigkeit reduzierst.

Beauty

Cortisol Face: Ärzt:innen ordnen ein und liefern die Fakten zum viralen Trend

26. November 2025
Tattoo entfernen lassen: Alles, was du 2025 wissen musst. Methoden, Kosten, Risiken, Pflege – kompakt erklärt von Top-Dermatolog:innen. Plus: Warum die DIY-Methoden auf TikTok ein No-Go sind.

Lifestyle

Tattoo entfernen lassen: Was wirklich hilft

17. September 2025
Der Vectra 360° gilt als das fortschrittlichste Hautscreening-Gerät und als beste Präventionsmassnahme gegen Hautkrebs. Doch wie gut ist es wirklich? Mein Selbsttest auf sonrisa verrät es.

Body and Mind

Die wohl modernste Hautkrebsvorsorge der Welt – und ich habe sie getestet

21. Mai 2025
Polynucleotide erobern die Beauty-Welt – und das aus gutem Grund. Auf sonrisa gibt es im FAQ durch den Profi alle Informationen über diese revolutionäre Hautbehandlung.

Beauty

Polynucleotide: Die Trend-Behandlung in der Beauty-Welt

12. September 2024
Um Augenringe vorzubeugen oder zu mindern gibt es einige Möglichkeiten, wie das FAQ auf sonrisa mit Profis aus den Bereichen Dermatalogie, Hautpflege und Makeup zeigt.

Beauty

Wie wird man Augenringe wirklich los? Profis klären auf

7. März 2024
Laser können zur Behandlung verschiedener äsethetischer Bedürfnisse eingesetzt werden. Im grossen Beauty-Guide auf sonrisa gibt es alle Fakten sowie wichtige Tipps dazu.

Allgemein

Schön ohne Skalpell: Der ultimative Guide über Laser-Behandlungen für Haut und Haar

25. Juli 2023
Der renommierte Dermataloge Dr. Stefan Duve beantwortet im exklusiven FAQ auf sonrisa alle Fragen zum Thema Botox.

Beauty

Botox FAQ: Alle Fragen vom Profi beantwortet

21. April 2023
Die Kombination aus personalisierter Hautpflege, Nahrungergänzungsmitteln und High Tech-Geräten macht myBlend zur Lösung für ganzheitlich schöne Haut.

Beauty

Die personalisierbare Lösung für ganzheitlich schöne Haut

9. Juni 2022
Was hilft wirklich gegen Augenschatten? Die Antworten auf diese und viele andere Fragen zu diesem Thema gibt es von Doppelfachärztin FMH für Plastische Chirurgie und Dermatologie Dr Inja Allemann in der neuen sonrisa-Serie Schattenspiele.

Beauty

Schattenspiele: Tipps von der Ärztin gegen Augenringe

4. Mai 2021
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katrincroth

Beauty editor 💌 Founder sonrisa.ch ✨ Model @bibamodelmanagement ⚡ Coffee first, Chaos second ☕ Dramaqueen with ♏ energy, book hoarder 📚

People always ask what I do for my skin as a 53 (o People always ask what I do for my skin as a 53 (okay soon 54) year old beauty editor and the honest answer is that it is never just one thing. 

I like keeping it real, because skincare is a mix of routine, treatments, and choosing what actually feels right. 

Not everything needs to be overcomplicated, but it also is not as simple as a nice cream and a prayer. 

Scroll through the carousel if you want a closer look at the treatments I have had over the years.

First pic is by @vanoordtphotography 

#BeautyEditor #BeautyInsider #BeautyEdit #HonestBeauty #SkincareEdit
Christmas countdown, with a little Rituals magic. Christmas countdown, with a little Rituals magic. 💫🎄

To kick off the sixth edition of sonrisa’s «schöner Schenken» series, I’m giving away the Premium Advent Calendar 2026 by @ritualscosmetics 

Twenty-four surprises, one very lucky winner, yay! 

HOW TO ENTER

✨ Follow me, @katrincroth and comment on this post.
✨ Want to double your chances? Comment on the giveaway post at sonrisa.ch, too. Link in bio!
✨ Entries close on 4 November 2026. Open to residents of Switzerland aged 18 and over.

THE FINE PRINT

One Rituals Premium Advent Calendar 2026 will be awarded. The winner will be selected at random from eligible entries and contacted by email or Instagram DM of this account. If the winner doesn’t respond within 48 hours of being contacted, a new winner will be drawn.

Please beware of fake accounts. I will contact the winner only from @katrincroth or via my official email address. I will never ask you for payment or your password to claim a prize.

No cash alternative. Swiss law applies. Personal data will be used only to administer the giveaway. We cannot accept responsibility for technical issues or lost entries.

This giveaway is in no way sponsored, endorsed or administered by, or associated with Instagram. By entering, you release Instagram from any responsibility in connection with this promotion.

Good luck, lovelies! 

#Rituals #RitualsAdventCalendar #BeautyAdventCalendar #SchoenerSchenken
Objects of personal affection. #StillLifePhotogra Objects of personal affection.

#StillLifePhotography #CartierTank #LifeLately #BeautyIsMyBusiness
Occupational habit: I test (almost) everything. Occupational habit: I test (almost) everything. 

Tonight’s subject: an evening on my own aka me-time.

Accesories: Some snacks, a magazine and a glass of Murailles 0.0%, made by the traditional method and gently dealcoholised. Alcohol-free, as always, because that’s how I like my bubbles. 🫧🥂
 
Result: repeat. 

Note from the beauty desk: alcohol tends to disturb sleep in the second half of the night, so this one also passes the morning mirror test.

#Murailles #Muraillles00 #alkoholfrei #metime #alcoholfreelife
Officially accepting summer is over. Please respe Officially accepting summer is over.

Please respect my privacy during this difficult time. 🍁

#FallStyle #AutumnOutfits #FallVibes #AutumnAesthetic #
Flipping through an old photo album is a great way Flipping through an old photo album is a great way to humble yourself real quick, mostly because of the haircuts. Nothing fixes that, and honestly, that’s fine.

When it comes to my skin though, I’d totally take a slight rewind. Luckily, NUXE’s researchers got this memo, which is presumably how Super Serum [10] Longevity happened: ten actions in one bottle, aimed at correcting what’s already visible and delaying what isn’t yet, based on a Marine Postbiotic Extract that’s new to the formula. 

To round out the same routine, @nuxesuisse recommends pairing the serum with the Nuxuriance Ultra Cream that was designed to revitalise, renew and resurface the skin.

The hair’s staying in the album. The skin gets the update.

#NuxeSwitzerland #SS10Longevity #NuxurianceUltra #Nuxe
The California photo dump has arrived. Twenty ye The California photo dump has arrived. 

Twenty years of coming back and I’m still leaving with the next trip in my mind. 

#VeniceBeach #LosAngeles #CaliforniaTravel #CaliforniaLife #USATravel
No particular reason for posting these. I just wan No particular reason for posting these. I just wanted a little piece of Venice here in my feed.

#VeniceBeach #VeniceCalifornia #LosAngeles #CaliforniaDreaming #VisitCalifornia
Retinol: Für die einen ist es der Goldstandard mod Retinol: Für die einen ist es der Goldstandard moderner Hautpflege, für die anderen ein Wirkstoff, der zu stark ist oder einfach überschätzt wird.

Um der Sache auf den Grund zu gehen, habe ich am Lancierungsanlass des neuen Retinol-Serums von @louiswidmerofficial die anwesenden Profis um ihre Einschätzung gebeten. Dabei wurde sehr schnell klar, dass sich bei Retinol eine differenzierte Betrachtung lohnt.
Meine wichtigsten Erkenntnisse:
 
✨Langsam starten lohnt sich. Die Haut braucht Zeit, um sich an Retinol zu gewöhnen.
 
✨ Geduld gehört zur Routine. Retinol wirkt nicht über Nacht, sondern langfristig.
 
✨ Die Hautpflege mit Retinol endet nicht mit dem Abendritual. Täglicher UV-Schutz (am besten mit SPF 50) ist ein Must.

✨ Antioxidantien können die Haut zusätzlich vor oxidativem Stress schützen. Die Formel des neuen Retinol-Serums von Louis Widmer enthält darum auch Astaxanthin.

Mit anderen Worten: Bei Retinol geht es nicht um ein pauschales Dafür oder Dagegen, sondern um einen verantwortungsvollen Umgang damit.

#LouisWidmer #dermakosmetik #retinol #beautywissen #Hautpflege
My first surfing lesson with wonderful @jagfarrah My first surfing lesson with wonderful @jagfarrah taught me something I probably should have known already.

I fell. A lot. I tried again. Fell again. Tried another way. And kept going because, honestly, it was so much fun.

It got me thinking about the last few months, maybe even the last few years. I’ve tried new things, failed at some of them, changed direction and found completely different ways of doing things.

Meanwhile, there has been this little voice in my head telling me that I’m a loser because I haven’t succeeded in the way I thought I was supposed to. The traditional way. The way that makes everything look nicely figured out from the outside.

Today, I realised, that there isn’t one way to get somewhere. There isn’t one way to build a life that makes you happy. 

So maybe we could be a little kinder to ourselves while figuring it out.

In any way, it’s never too late to be a beginner.

I still can’t surf. But I am so very happy I tried. And just for the record: I stood on this board for several times 😊

#California #SoCal #VeniceBeach #SurfLesson #TryingSomethingNew
I lost track of time in a museum. That does not ha I lost track of time in a museum. That does not happen very often to say the least (I get very quickly overstimulated).

The new David Geffen Galleries at LACMA, designed by Peter Zumthor, are amazing, fascinating and incredibly spacious. I was completely taken by the magic of the Californian light and by how much the architecture changes the way you experience the art.

There was far too much to take in during one visit, even for humans with a perfectly respectable attention span. Still, it was one of those places where I could have stayed longer because the energy was absolutely fabulous!

And standing above Wilshire looking down at LA was pretty special.

Ps: The Erewhon coffee afterwards was also a good call. Not ashamed to admit this!
Currently out of office. #happyplace #california Currently out of office.

#happyplace #california #losangeles #travelgram #grateful
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