1) Use non-bleeding micas, just a pinch at a time to get a light tinted shimmer that still has clarity. In the Woodgrain Soap above, I used just a hint of cappuccino mica. The engraved design still shows up beautifully and the mica doesn’t bleed (you can find the full tutorial here). In the Daisy Bars on the right, I used a touch of opalescent mica as the background color. It’s still pearly without looking too heavy.
2) Use oxides and pigments with a very light hand. It’s best to start with liquid colorants since it’s easier to add the color one drop at a time, but you can also dilute your powders and add by drops, too. You can see in these Ice Bars that I was able to get a clear blue center that won’t bleed into the white frame. Ultramarines (the blue, purple, and some pink pigments) are very fine powders that keep their clarity very well if used lightly. But remember – one drop at a time!
For a quick reference of which micas and pigments Bramble Berry carries that are non-bleeding, check out Anne-Marie’s recent post here. And for some more great projects using sheer colors, pick up your Soapylove book here! Happy coloring!