All BORO*MINI ingredients are extracted from plants, roots and minerals straight from nature! This ensures a safe, non-toxic, sustainable dyeing process since all ingredients are biodegradable!

This unique, non-toxic way of dyeing natural textile consumes less water and creates a unique colour pallet of lively colours in subtle and vivid tones. All ingredients used in the dye and ink recipes can be counted on the fingers of a single hand and are completely natural, just like your baby.


Throughout the past years, a lot of experimentation has been done at the BORO*ATELIER and we’ve learned a lot about natural textile dyeing. The experiments and development of new natural colours is never-ending. Below you will find the natural ingredients used to create the remarkable colours of the BORO*MINI baby essentials!

These remarkable, natural dyes make for a bright and safe colour pallet that is safe to wash at 40 degrees! Quite handy when you’ve got a baby (-;



BORO*MINI works with certified, sustainably produced organic cotton exclusively, such as GOTS and OEKO-TEX. These quality labels guarantee that the cotton is produced environmentally and human-friendly without the use of toxic substances.

Global Organic Textile Standard certified cotton. the GOTS label guarantees that the cotton is produced in an environmentally friendly and socially responsible way.

Oeko-tex (Ökotex) standard 100 is a quality label that provides a guarantee pertaining to health. Oeko-tex tests the clothing for harmful substances. Once a piece of clothing obtains the Oeko-tex quality label, it is guaranteed to be free of any harmful substances. Better for your skin and health!

Oeko-tex 1000. This label indicates that the product was produced in an environmentally and human-friendly way. The people involved in the production process are not exposed to any harmful substances and work under proper conditions.

 Nothing is discarded and each piece of residual fabric is put to use. Completely in line with the BORO principle; use everything and waste nothing, the pieces of residual fabric are upcycled to create new baby products. This is how the colourful and cheerful BORO*MINI teething rings, pacifier cloths and garlands were created.



The natural state of iron is hematite. Iron has a tendency to return to its natural state by rusting. Rust is the red-brown colour iron gives off as it reacts with oxygen combined with water. Adding vinegar speeds up the process, which is how we create our own iron dye. Hematite was used as early as the stone age for creating cave paintings. Since hematite is non-toxic, it is highly suitable as a pigment.

At the BORO*ATELIER, iron dye is created by placing iron in a bath of vinegar. The acid in the vinegar speeds up the oxidation process. This highly concentrated iron pigment is added in small quantities and in combination with gallnut it creates the magnificent aubergine, grey colour we’ve dubbed Sunny Grey! 




The intense indigo blue is extracted from the leaves of the indigo plant. The indogofera family contains 250 different varieties worldwide, growing in various climates. Back in the day, woad was used a lot in Europe, it used to be a necessary ingredient for a whopping 90 percent of natural colours. Woad lost its appeal when the tropical indigo was discovered, which turned out to be far more potent. What sets indigo apart is the magic of its shift in colour. When the substance is released from the vat, it is yellow/green. But as it reacts with oxygen, it turns into the gorgeous blue colour we all know and love.

BORO*MINI works with indigo from central America which is knows to be “the best indigo” with a high indigo percentage. Our supplier knows all the farmers personally and always delivers the best quality.

Indigo is said to have a calming effect. Who knows, it might help your baby sleep when covered by the indigo crib blanket!



Madder is one of the oldest red-colouring dyeing plants. After three years of growing, the dye can be extracted from the root of the plant. They used to cultivate a lot of madder in Zeeland, the madder processing plants still scattered across the landscape are a testament to this once blooming industry. A madder processing plant consisted of 3 parts: the barn where the roots were dried, then they would be taken to the drying tower with oven in order to purify them as well as continue the drying process, then the madder roots were powdered by large mashers propelled by horses. A single madder processing plant was co-owned by several farmers since they required a large investment. This constituted one of the first examples of agricultural cooperation. Unfortunately, this blooming industry came to a halt around 1863 because the synthetic variety of this gorgeous red dye was much cheaper to produce.

A combination of gallnut and madder gives rise to the gorgeous BORO*MINI Madder Pink colour!



Cold stain is an umbrella term for natural substances that are added prior to the natural dyeing process in order to fixate the colours or to make other tones. These substances help natural colours adhere to the textile. The cold stain functions as a bridge between the molecules of the cotton fibres and the molecules in the dye. The cold stain opens up the fibres of the cotton which helps the dyes penetrate the cotton and adhere to the textile.



Gallnuts are the small spheres found on oak leaves. They are the result of insects laying their eggs on the oak leaf. The gallnut grows around the egg and serves as a home and source of food for the larva, which disappears through a hole in the gallnut after it molts.

Gallnuts contain a lot of tannins and are used as a mordant in the natural dyeing process: substances added to the dyeing process in order for the dye to adhere to the textile. Gallnuts function as a bridge between the cotton fibre molecules and the dye, madder and iron molecules.

The best gallnuts are found in Syria!



Fructose, i.e. fruit sugars, are a reduction agent necessary to produce the indigo vat. The fructose is combined with chalk in order to remove the oxygen molecules from the indigo. Indigo doesn’t become water soluble until all the oxygen has disappeared: only then can it be used as a dye!



Chalk is the substance that allows for the reduction agent, fructose, to do its job by modifying the pH value of the indigo vat. Chalk is also known as a base in chemistry. A base is a counterpart of acid and changes the pH value, which is required for the indigo to become water-soluble and thereby obtain the desired blue colour.