Matte Black Oxide Pigment Powder: How to Colour Soaps, Candles and Cosmetics

Matte Black Oxide Pigment Powder is a stable, water-insoluble colourant used to add a clean matte black to soaps, candles, cosmetics and craft projects. It is a synthetic iron oxide in fine powder form, valued because it holds its colour well and works as both a standalone shade and a tool for deepening other colours. Azlok offers it from a small 15 Gm trial pack up to 5 KG for regular makers.

What it is and where it comes from

This pigment belongs to the iron oxide family, the same group of colourants widely relied on in cosmetics and personal care. It is made in India, comes as a dry black powder with a fresh, neutral character, and is insoluble in water, which means it disperses through a base rather than dissolving into it. Because it is fairly inert and stable, it suits a broad range of bath, body and craft applications.

Common uses

Soap making: colour cold-process, melt-and-pour and liquid soaps a soft charcoal to deep black.
Candle making: tint wax for dark or dramatic pillar and container candles.
Cosmetics: a base colourant for eyeshadows, eyeliner, lip products and nail paints or gels.
Art and craft: mix into resin, plaster, clay and other DIY media.
Colour blending: add a pinch to greys, browns, greens or purples to deepen the tone.

How to use it

A little goes a long way, so start small and build up. The exact quantity depends on how dark you want the finished item and the colour of your base.

Pre-disperse the powder. To avoid speckles, mix the pigment into a small amount of liquid oil, glycerine or your carrier before adding it to the full batch.
For soap: a common starting point is around half a teaspoon to one teaspoon per 500 g of soap base. Blend well and adjust.
For candles: stir the pre-dispersed pigment into melted wax and mix thoroughly. Since it is a pigment rather than a dye, it can clog wicks if overused, so keep the dose modest and test-burn one candle first.
For cosmetics: use as part of a properly formulated recipe and follow accepted cosmetic-grade usage levels.

Always make a small test batch before committing to a large one, and note down your measurements so you can repeat a shade you like.

Safety and handling

Pigment powders are very fine and easily airborne, so handle them thoughtfully.

Work in a well-ventilated space and avoid inhaling the loose powder; a dust mask is sensible when weighing out larger amounts.
Wear gloves and an apron, as the black colour stains skin, clothes and surfaces.
Do not ingest. Keep away from children and pets.
For any product that touches skin, lips or eyes, patch-test the finished item and use only within recognised cosmetic guidelines.
Refer to the product COA and MSDS for detailed handling and specification information.

Buying and storage tips

Match the pack size to your project. The 15 Gm and 100 Gm packs are ideal for testing recipes and small batches, while 500 Gm, 1 KG and 5 KG suit small businesses and frequent makers. Store the powder in a cool, dry place, tightly sealed and away from moisture and direct sunlight. Kept properly, it has a shelf life of around two years. Because it is water-insoluble, close the pack promptly to keep the powder dry and free-flowing.

FAQ

Is Matte Black Oxide Pigment Powder safe for cosmetics?

Iron oxides are widely used as cosmetic colourants. Use this pigment within accepted usage levels in a proper formulation, avoid inhaling the loose powder, and patch-test any finished product before regular use.

How much should I use per batch?

Start with a small amount, such as half to one teaspoon per 500 g of soap base, then adjust to reach the shade you want. Pre-dispersing the powder in oil or glycerine gives an even colour without speckles.

Does it dissolve in water?

No. It is water-insoluble, so it disperses through a base rather than dissolving. Mix it into oil, wax or your carrier for the smoothest result.

Can I use it in candles?

Yes, but as a pigment it can clog wicks if overused. Use a modest amount, mix thoroughly into the melted wax and test-burn one candle before making a full batch.

How long does it last and how should I store it?

Stored in a cool, dry, sealed container away from moisture and sunlight, it keeps for about two years.