A little goes a long way! When starting out, stir a small amount of mica powder into your base to see the resulting shade, then add more until you achieve the desired color. Different amounts of the same mica powder can result in a wide range of hues, so it may take some adjustments and testing to achieve your desired color.
For small batch projects, we recommend using microscoops or the smallest measuring spoon you have around. Keep track of the scoops used so you can replicate your results in the future. You can find crafting microscoops online by using the search term “microscoop.” Remember, don’t use crafting tools for food preparation after using them for crafting purposes.
The color and opacity of your base factors into color payoff, with more translucent bases resulting in more vibrant colors. The natural color of the base affects the final color after mica is added; yellow bases like beeswax will retain their yellow tint and white bases will result in more pastel hues.
Are you surprised that we didn’t recommend measuring on a scale? If you’re familiar with making candles or using fragrance oil and essential oil, you know that we always recommend measuring materials on a scale. Like fragrance oils and essential oils, mica powders vary in density. While weighing materials that vary in density is a more accurate method, the weight of mica needed for many small-batch projects simply won’t register on many scales.
To weigh mica powders, you need a scale that measures in 0.01 gram increments, like a jewelry or cosmetics scale. Cold process soap and cosmetics makers often work with small weights like this.
While weighing mica powder is the best way to ensure accuracy, it’s okay for beginners to start out by measuring with scoops or teaspoons. If you graduate to larger batches, we recommend upgrading your scale and measuring by weight.