Step 1: Pick the Finish. Pearly and metallic micas like gold and silver add sparkle and sheen, while rich colour micas add both colour and a soft shimmer. Choose by the finish you want, since micas do more than plain colour.
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Step 2: Disperse Before Adding. Mix the mica into a little oil or glycerine to a smooth slurry before adding it to your base. This prevents clumps and gives an even shimmer through the product.
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Step 3: Add to the Right Product. In soap, add at trace or to melted base. In makeup, blend into your powder or press. For bath products, disperse mica with a little polysorbate 80 so it spreads through the water instead of floating as a ring.
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Step 4: Test in Cold-Process Soap. Some micas can shift colour, or morph, in the high pH of cold-process soap. Test a small batch first, or choose micas labelled stable for cold process, before committing to a design.
About Micas
Mica is a mineral colourant that brings something plain dyes cannot: shimmer. Mined and milled into a fine powder, then coated with colour, micas add pearl, sparkle, and rich tone all at once, which is why they are the base of most shimmer cosmetics like eyeshadow and bronzer, and a favourite for giving soap a metallic sheen. Unlike liquid dyes, micas do not dissolve; they disperse as fine particles, so they do not bleed, which makes them ideal for crisp soap swirls, layers, and painted details.
Two habits make micas easy. First, pre-disperse the powder in a little oil or glycerine so it blends smoothly instead of clumping. Second, for bath products, mix mica with a small amount of polysorbate 80 so it disperses through the water rather than floating and leaving a ring on the tub. Keep in mind that some micas can morph in cold-process soap because of the high pH, so test first. Every mica here is documented and made in a WHO-GMP and ISO 9001:2015 certified facility with a COA on request.
Good to Know
• Disperse for even shimmer. Mix mica into a little oil or glycerine before adding it, so the sparkle spreads evenly instead of clumping into patches.
• Use polysorbate 80 in the bath. To stop mica floating and leaving a tub ring, disperse it with about 2 percent polysorbate 80 in the liquid stage of a bath product so the colour spreads through the water.
• Some micas morph in cold-process soap. The high pH of cold-process soap can shift certain mica colours. Test a small batch, or choose micas labelled stable for cold process, before you commit to a design.
Frequently Asked Questions
Mica is a mineral colourant milled into a fine powder and coated with colour, used to add shimmer, pearl, and rich tone to cosmetics. It is the base of most shimmer products like eyeshadow and bronzer and is widely used to give soap a metallic or pearly sheen. Micas disperse as particles rather than dissolving, so they do not bleed.
Pre-disperse the mica in a little oil or glycerine to a smooth slurry, then add it to your base. In soap, add it at trace or to the melted base; in makeup, blend it into your powder or pressed product. Start with a small amount and build up, since micas are concentrated and a little gives a strong shimmer.
Micas generally do not bleed, which is why they are great for crisp swirls and layers. However, some micas can morph, meaning shift colour, in the high pH of cold-process soap. To avoid surprises, test a small batch first or choose micas labelled as stable for cold process. In melt-and-pour soap, morphing is much less of an issue.
Disperse the mica with a small amount of polysorbate 80, around 2 percent, in the liquid stage of your bath product. This helps the mica spread through the water instead of floating on the surface and leaving a coloured ring on the tub. Without a dispersant, oil-loving mica tends to sit on top of bathwater.
Cosmetic-grade mica is widely used in skin, makeup, and bath products and comes with a COA. As with any colorant, specific micas have specific approved uses, for example some are approved for use around the eyes or lips and others are not. Confirm each mica is approved for your product type and market, and use it at the recommended rate.
A plain pigment gives solid, matte colour, while a mica gives colour plus shimmer or a pearlescent sheen, because of its reflective mineral base. Both disperse as particles rather than dissolving, so neither bleeds much. Choose a mica when you want sparkle or pearl, and a matte pigment or dye when you want flat, non-shimmery colour.
Many micas are used in lip and eye products for their shimmer, but not every colour is approved for those uses, since the eye and lip areas have stricter colorant rules. Always check that a specific mica is approved for eye or lip use in your market before adding it to those products, and follow the recommended usage rate.
