Shikonin Content and Solubility of Lithospermum Erythrorhizon Root Powder

Based on the technical data for Lithospermum Erythrorhizon Root Powder (Murasaki Powder), here are the details regarding its composition and behavior in formulation:

1. Approximate Shikonin Content

For a natural, non-standardized dried root powder like this one, the total shikonin content (including shikonin and its derivatives such as acetylshikonin) typically ranges between 1.0% and 1.4% of the dry root weight.

• Note: This is an estimate based on botanical literature for Lithospermum erythrorhizon. Because this product is a 100% natural ground root, the exact percentage can vary from batch to batch. If a precise concentration is required for your formulation, it is recommended to refer to the specific Batch Certificate of Analysis (COA).

2. Powder Base

The base of this product is 100% mechanically ground Lithospermum Erythrorhizon root.

• It does not contain external carriers such as maltodextrin or silica.
• The INCI name is Lithospermum Erythrorhizon Root, which confirms it is the raw botanical material rather than a spray-dried extract on a carrier.

3. Appearance in Water or Glycol (Haziness)

The product will appear hazy and opaque when dispersed in water or glycols (such as Glycerin, Propylene Glycol, or Butylene Glycol).

• Solubility: This powder is insoluble in both water and oil. It acts as a suspended botanical solid rather than a soluble dye.
• Dispersibility: While it can be "dispersed" (spread throughout the liquid), it will not dissolve to form a transparent solution. In glycols, the powder may wet more easily than in water, resulting in a smoother dispersion, but it will remain cloudy.
• Sedimentation: Over time, the particles will settle at the bottom of the container unless a thickening or suspending agent (such as Xanthan Gum or Carbomer) is used to keep them in suspension.
• Color & pH: The dispersion will typically be deep purple or red. Note that shikonin is pH-sensitive; it remains purple/red in acidic to neutral conditions but can shift toward blue in alkaline environments (pH > 7).

Formulation Recommendations

• Best Use: This powder is ideal for products where an opaque or "natural" botanical look is desired, such as clay masks, scrubs, opaque soaps, or thick creams.
• Avoid: It is not suitable for clear toners, transparent serums, or clear gels, as the insoluble root particles will create significant turbidity.