We redefine "clean"
We're called Ren Hverdag — and it's the core of our principles, choices and processes. CLEAN.
Not "natural". Asbestos is natural.
Not "approved by the Danish EPA". Fragrance is approved by the Danish EPA.
We're small, but independent. No long supply chains, no middlemen who need to profit on every kilo of raw material. That lets us hand-pick exactly what WE, after meticulous research, approve as CLEAN. Not merely "clean enough".
What's in a RenHverdag bar
Water — distilled. Danish tap water is lime-heavy — moderately hard (>60 mg/L) to hard (>120 mg/L), with high levels of calcium and magnesium from the groundwater. These minerals react with the soap's fatty acids and form insoluble salts (calcium/magnesium stearates = soap scum), disrupt emulsification and make every batch unpredictable. We don't accept that.
Oils — organic, hand-picked per supplier assessment. Every oil has its INCI and CAS number documented. We never use palm oil.
Lye (NaOH) — cosmetic grade. Reacts with fat and becomes soap + glycerin. We don't sell the glycerin off; it stays in the bar, where it belongs.
Clay — genuine French Illite/Kaolin/Montmorillonite blend, ultra-ventilated, from one documented supplier. Not white kaolin with added iron-oxide pigment (CI 77491, CI 77492, CI 77499), which most cheap "rose clay" or "green clay" is.
Essential oils — from approved suppliers with full documentation. Not "fragrance oils", not "nature identical", not from Temu.
Coconut charcoal (in charcoal variants) — 100% coconut shell. The highest adsorption capacity per gram of the common charcoal types: 1,247–1,450 m²/g vs bamboo 600–984, wood charcoal 500–800.
Every ingredient has an INCI, a CAS number and a supplier spec. We check them, document them and compare qualities before we choose.
What we never use
MICA pigments + Titanium Dioxide (CI 77891). Mica is overrated. Our bar colours come from real minerals (charcoal, iron), plants or clay — not from synthetic pigment blends.
Coloured chalk marketed as "clay". Our clay is genuine French from a documented supplier. Not white kaolin with added iron-oxide pigment.
Synthetic fragrances. Not "fragrance oils", not "nature identical", nothing that covers up what it actually is.
Detergent-based bars marketed as "soap". We make real saponified soap — NaOH + fat. That's a chemical process, not a marketing term.
Palm oil. Off-brand for us. Environmentally and professionally.
Industrially removed glycerin. Glycerin arises naturally during saponification and stays in the bar.
Animal testing. Neither on finished soaps nor on raw materials.
How we make them
Cold process. The traditional method. Fatty acids and NaOH react over 4–6 weeks of cure time. No shortcuts. No melt-and-pour. No synthetic emulsifying.
Every recipe is documented with precise weights. Small variations change the final bar significantly — we weigh down to the gram.
Every batch is prototyped on our own skin before it goes on sale. If we wouldn't use it, it doesn't become a product.
Every bar cures for 4–6 weeks. It's weighed and quality-checked before it leaves us, and labelled with full INCI — no umbrella terms like "parfum" or "natural essence".
Raw materials and research
We have full supplier specs on every clay, every oil, every essential oil — INCI, CAS numbers, origin, quality grade. A documented internal reference, open to customers who want to go deep.
It cleans. It cares. If you get a skin reaction — we'll exchange it.
Write to us within 14 days with a photo of the reaction (redness, rash, itching). We'll send another variant or refund.
We also cover an opened and used bar. Most shops don't — not even for an allergic reaction.
What we do NOT cover: that our soap doesn't lather like the pump bottle from the supermarket. It isn't designed to. Real soap needs a couple of seconds longer on a sponge or shaving brush.
You pay return shipping.
If, on the other hand, you get a positive skin reaction — feel free to thank us with a review.
The blog — if you want to go deeper
We write about what the industry would rather keep quiet. At renhverdag.nu you'll find 50 articles about:
- How to read an INCI list. Is it alphabetical instead of by weight order? Does it say "vegan" while the INCI lists CI numbers from animals? Do you get categories ("surfactants > 30%") instead of ingredients? Concrete check-points you can use yourself.
- Soap's 4,800-year history. From Babylonian craft to synthetic detergent in 1913 — and what we lost along the way.
- Hair and skin without the buzz. The acid mantle. Sebum rebound. The wrong routines. What actually works — without adjectives, only facts.
- Industry criticism based on data. Every third care product contains problematic chemistry you don't check. SLS sold the world. You're paying for a pump full of water.
Plus the personal story — why we started, what we've learned through prototypes, mistakes and good batches.
We cite sources. We lean on independent research, not industry marketing.