Hi, I'm Mads.
Skincare expert and founder of Danish Skin Care.
I'm Mads Timmermann, Danish skincare specialist. This is where I publish the evidence-led writing I wish existed when I started out. Ingredients, conditions, and routines, explained without the marketing.
Danish Skin Care
Mads Timmermann
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Skin conditions
Start with the condition
that brought you here.
Honest, expert-reviewed guidance for the most-searched concerns. Causes, triggers, what to do, what to avoid.
Find out what's really in your products.
Search the INCI ingredients database for evidence-led verdicts on every molecule in your routine. Spot the irritants, the actives that earn their place, and the marketing-only filler.
From the blog
Latest writing.
Honest commentary on what works, what doesn't, and what to ignore. Always with citations.
Routines
Skin cycling explained, and why it's the smartest beginner routine in years
The TikTok routine that actually has science behind it: rotating active nights with recovery nights. Here's why it works and how to do it properly.
23 May 2026
Routines
The retinol beginner guide: start low, go slow, finish strong
Almost everyone who 'tried retinol and it didn't work' was using it too often, too soon. Here's the protocol that actually works.
23 May 2026
Comparisons
Niacinamide vs vitamin C, and the myth they cancel each other out
Two of the most-recommended actives in skincare. Do they really cancel each other out? (No.) Which one should you reach for? (Both, usually.) Here's the evidence-led answer.
23 May 2026