This post was originally prepared as a Cosmeau newsletter in May 2026.
Mailing Summary
- ✨ New: Zomerbries Laundry Perfume
- ✨ Laundry Sheets 2+2: 50% off
- 💸 Summer Offers: upgrade your home with ZON30
- 🌱🌞 Tips: before you go on holiday
- 🏭 Production update
✨ New: Zomerbries Laundry Perfume
Meet Zomerbries: our new laundry perfume for that fresh, sunny feeling of freshly washed sheets on the line. Light, cheerful and summery, without overpowering. Perfect for towels, bedding and your favourite clothes. A little sun and holiday feeling in your home already.
We now have the full Cosmeau scent line as laundry perfume. Make sure to dose it in the right compartment of your detergent drawer, the fabric softener compartment. If you do not smell enough scent, you can also dose it on a sock directly in the drum.
This month with an introductory discount of 30% with code ZON30. Also available as scent boosters.
Go to Zomerbries Laundry Perfume →
Go to Zomerbries Scent Boosters →
✨ Laundry Sheets 2+2 - 50% Off
More than a year's supply for half the price. We do not do this often, but this month it is 2+2 with a scent of your choice, excluding Wilde Bossen and Wolkendek.
Choose your favourite scent and add sheets for black or white laundry if that matters to you. All our laundry sheets are universal, but if you want to get the most out of your colours, choose the specific colour variants.
If you want to combine laundry sheets with our new Zomerbries laundry perfume or scent boosters, choose Fragrance Free, Spring Fresh or Sea Breeze for a fresh match.
Our 5th generation formula is the strongest laundry sheet formula on the market, with 5 enzymes against different stains such as sauces, pasta, grass and mud.
How do you get the discount?
Add 4 participating laundry sheets to your cart. The discount is applied automatically, so you only pay for 2 of the 4 products. Mix & match is possible, so you may combine different scents within this offer.
💸 Summer Offers
With the spring clean and spring clear-out behind us, this month is the moment to upgrade. We have several products to refresh your laundry room and interior, all with a sunny 30% discount.
Upgrade the look of your kitchen with the luxury cutting board set, a real eye-catcher. Replace yellow smelly dishcloths with black reusable bamboo dishcloths that do not hold odours and are antibacterial.
The sponge and yellow cloths often end up everywhere too, so with the drying rack you keep them tidy and help them dry faster. Practical and beautiful.
Go for a clean look with the 2-in-1 towel and tea towel. They are designed so you can use them as both, they dry your dishes well and are soft enough to dry your hands. Available in 4 natural colours, with a loop on each side so you never have to search. Handy.
Finish the look with the beautiful glass dish soap set, hand soap and glass cleaning set.
Upgrade your home with 30% off using ZON30.
🌱🌞 Tips before you go on holiday
With the spring clean and spring clear-out behind us, this month is the moment to upgrade.
Holiday-ready in one afternoon
- Kitchen: empty fridge and fresh scents
- Bathroom: only essentials visible
- Laundry room: refill your stock before you leave
- Bedroom: fresh bedding when you come home
- Hallway: basket for sunglasses, keys and travel documents
Spend your holiday pay smartly
- Less loose clutter means less stress
- Beautiful basics last for years
- Reusable cleaning products save money
- Small upgrades give your home a hotel feeling
Hotel feeling at home
- Calm towels
- Beautiful glass dispensers
- Reed diffusers for each room
- Tidy countertop
- Fresh-smelling dishcloths
Summer reset checklist
- Store winter items
- Get the balcony summer-ready
- Check BBQ and garden items
- Wash beach towels
- Add a summer scent at home
- Donate before your holiday
Packing without chaos
- Travel cubes
- Keep dark laundry separate
- Travel-size basics
- Take laundry sheets on holiday
- Lay out outfits per day
Coming home fresh from holiday
- Clean kitchen before departure
- Hang a fresh dishcloth
- Refill hand soap
- Make the bed fresh
- Empty the laundry basket
Summer evening routine
- Light a sand candle
- Reed diffusers
- Calm, tidy home
- Light textures and neutral colours
- Less visual clutter
Small swaps, big difference
- Plastic pump → glass dispenser
- Wet dishcloth → drying rack
- Chaotic cupboard → felt storage boxes
- Bright textiles → calm tones
- Heavy bottles → laundry sheets
🏭 Production update
We thought we could complete the move in a few weeks, but we are still right in the middle of it. You probably know the feeling: as soon as you open one cupboard, more comes out than you expected.
Most of the stock has now been moved to the warehouse, with around 20 pallets still to go. We can now sort and organise the raw materials, followed by the preparation work for detergent production. After that, we will give the current machines their place. Our packing section and logistics have already fully moved over.
From lab test to machine
To make the bio-film, we currently use a special lab machine. It allows us to produce a thin film, but for now only in a small format: about half an A4 sheet at a time.
At the start, we immediately ran into a fundamental problem: we were able to make a liquid formulation, but as soon as we spread it out, the material pulled together into small “islands” instead of forming one even film.
That turned out to be a major challenge.
Together with specialists in material and machine development, we eventually found a solution. We tested extensively with different ratios, surface tension and material combinations until we were able to produce a stable, thin strip.
We spent a huge amount of time on that in the early phase, but it became the foundation for everything that followed.
Then the next big question came up: drying time.
To speed up development, we deliberately chose to first gain full control over the film and formulation before optimising directly for mass production. We already have the right machines to process films further. The biggest challenge was first developing a well-functioning bio-film.
By experimenting with different raw materials, drying methods and process settings, we have already managed to reduce the drying time significantly. At the same time, the big question remains: can this scale industrially?
To test that, we then had a special machine built that can produce longer films than our original lab machine.
Last month, we used it to produce a bio-film of more than one metre for the first time, exactly the film we previously shared in a photo. For us, that was a hugely important moment in the development process.
Behind the scenes, we are working hard on the next generation of detergent and have taken several more steps in the process. Not only on a new formula, but also on a new production process. That is technically complex: quality, scalability, costs and speed all have to come together.
Still, this is exactly why we started Cosmeau. We want to be less dependent on distant production, have more control over what goes into our products and ultimately produce in the Netherlands.
Almost all laundry sheets on the market still come from far away or still contain PVA. We are building a better alternative step by step, together with experts in material and machine development. If all goes well, we will receive another new test machine in June, with a production process that is more scalable and less labour-intensive. That matters for keeping costs low once we scale, built on all the experience and tests from the past period.
It is taking longer than we would like, but the direction is clear: better detergents, shorter chains and production closer to home.
Thank you for your continued support. Enjoy the beautiful days!
As always, thank you for choosing Cosmeau 💚
With your contribution, we are working on local production of cleaner products for your home, yourself and gifts for loved ones with peace of mind.
Shipping is from our Dutch warehouse. Do you have questions or comments? Let us know via chat, email or phone at +31 88 04 04 488 🤗
Sustainable greetings from Team Cosmeau! 💚
Jason & Vivienne
Prices that are accessible for 
