What it is
Curcuma longa root powder is made by drying and grinding the rhizome of the turmeric plant. It is rich in curcuminoids, which give it a deep yellow-orange color and antioxidant character. In formulations it contributes natural warm tint and skin conditioning, and is often used in tinted products to add color.
Safety & warnings
Generally well tolerated as used in cosmetics. Its intense pigment can transiently stain skin or lighter-colored products, so it is used at controlled levels. As a botanical it may carry a low potential for sensitization in predisposed individuals; it is not an oil, so comedogenicity is not a relevant concern.
Origin & sourcing
Natural material produced by drying and milling the rhizomes (roots) of Curcuma longa.
History
Turmeric has a long history of culinary, dyeing, and traditional cosmetic use across South and Southeast Asia, where it has been applied to skin in cultural and bridal preparations.
Questions everyone asks
Why is turmeric root powder added to tinted sunscreens?
Its curcuminoids give a warm yellow-orange color, so it is used as a natural colorant that can also add a conditioning, antioxidant botanical.
Will it stain the skin?
Its strong pigment can transiently tint skin or lighter products, which is why it is used at carefully controlled levels.