Titanium Dioxide Powder: The Matte White Pigment for Soap, Candles & Cosmetics

Titanium dioxide powder is a fine, non-toxic white pigment used to whiten and add opacity to soap, candles, cosmetics and craft projects. Because it is water-insoluble, heat-stable and resistant to fading, it gives a clean, matte white that does not bleed or morph over time, which is why makers reach for it whenever they want a bright base or true pastel colours.

What titanium dioxide powder is used for

This is one of the most versatile pigments on a maker's shelf. A small amount goes a long way, and it works across both water-based and oil-based projects.

• Cold process soap — brightens the base so other colours look vivid, or creates crisp white swirls and layers.
• Candle making — its high melting point means it stays stable in hot wax, giving opaque white or clean pastel candles.
• Cosmetics and beauty care — used in nail paints, eye shadows, mineral makeup and bath and body products as a whitening and opacifying agent.
• Art and craft — resin work, DIY paints, plaster and casting where a solid white pigment is needed.

How to use it correctly

Titanium dioxide clumps if you tip it straight into a batch, so always disperse it first. This single step prevents the dreaded white speckles and streaks.

1. For soap: Mix roughly 1 teaspoon of powder into 1 tablespoon of a light liquid oil (or distilled water) and blend until smooth with a mini frother before adding to your batter. A common starting dose is about 1 teaspoon per 500 g of oils.
2. For candles: Pre-mix the powder into a little melted wax to form a paste, then stir it into the main melt. Add gradually until you reach the opacity you want.
3. For cosmetics: Follow a tested formulation and weigh accurately. Blend thoroughly so the pigment is evenly distributed and free of grit.

When suspended in plain tap water at room temperature it disperses into a permanent white shade. Add small amounts, check the colour, and build up slowly — it is much easier to add more than to fix an over-whitened batch.

Oil-dispersible vs water-dispersible

Titanium dioxide comes in two forms. The oil-dispersible type suits candles, melt-and-pour soap and anhydrous cosmetics, while the water-dispersible type is better for the water phase of cold process soap and lotions. Choosing the right one for your medium is the quickest way to avoid glycerin rivers in soap and clumping in general.

Safety notes

Titanium dioxide is widely regarded as non-toxic and skin-safe in leave-on and rinse-off products, but sensible handling still matters, especially with fine powders.

• The dust is very fine — wear a dust mask and work in a well-ventilated area so you do not inhale it.
• Wear gloves and avoid getting powder in your eyes; the pigment stains easily.
• Do not ingest. Keep it away from children and pets.
• For any product going on skin, follow a tested recipe and stay within recommended usage rates. Do a small patch test on new leave-on formulations.
• Always keep the MSDS handy and refer to the COA for grade details when formulating for sale.

Buying and storage tips

Azlok stocks titanium dioxide powder from 100 g right up to 20 kg, so you can buy a small pack to test and scale up once you are happy with the results. The 100 g size is ideal for hobby batches, while bulk 5 kg and above suits small businesses making soap or candles regularly.

Store it in a cool, dry place with the container tightly closed. Moisture is the main enemy — it can cause clumping — so keep the lid sealed and use a dry scoop. Kept properly, the powder has a shelf life of around two years. Buy quantities you will realistically use within that window to keep it fresh and free-flowing.

FAQ

How much titanium dioxide do I add to soap?

A common starting point is about 1 teaspoon of dispersed powder per 500 g of oils. Add it gradually and adjust to the whiteness you prefer, since exact amounts vary with your recipe and colourants.

Why does my titanium dioxide clump or leave white streaks?

It clumps when added dry. Always pre-mix it into a little oil or water (or melted wax for candles) and blend until smooth before adding to your batch.

Is titanium dioxide powder safe for skin?

It is widely considered non-toxic and is commonly used in cosmetics and bath and body products. Follow tested formulations, wear a mask when handling the dry powder, and patch-test new leave-on products.

Can I use the same powder for both candles and soap?

You can, but oil-dispersible titanium dioxide works best for candles and melt-and-pour, while water-dispersible suits the water phase of cold process soap. Matching the type to your medium gives the cleanest results.

How long does titanium dioxide powder last?

About two years when stored in a cool, dry place in a sealed container away from moisture.