This glycerin based blue colorant has been formulated for ease of use. No more mixing, straining or clumping as you color your melt & pour soaps! Simply add this product by the "drops," stirring gently, until the color that you desire is achieved. We pack this item in a "squeeze" bottle that has a tip at the top, so drops are possible without having to use a separate dropper top.
You can use this product to color any waterborne recipe, though ultramarines are not recommended in highly acidic environments such as bath bomb's. For best results, add to the water phase of the recipe. We also sell this product in a powder version - which is easier to work with for cold process soap making if you intend to color the entire soap batch. If you are "spot coloring" your cold process soap, then this liquid version would be our recommendation. Simply add drops into your just poured soap, and with a thin knife, swirl the drops around in creative patterns.
INCI: Ultramarine (and) organic glycerin. (Yes! We use organic glycerin to manufacture these colorants, though the ultramarines cannot be certified organic ... see below).
Please note that our ultramarines and iron oxides are a high quality, lab produced, synthetic colorant. They are globally compliant to be used in cosmetics sold internationally.
Iron oxides and ultramarines can be found in nature, but they are generally not safe nor approved for cosmetic use, as they often contain high levels of lead and other toxic heavy metals. Any website that claims they are selling a natural iron oxide (and not a lab produced version as ours is), should be carefully evaluated. For more reading on this, you can visit the FDA link here: http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfCFR/CFRSearch.cfm?fr=73.2250