Is indigo powder is safe for hair?

H&C Herbal Natural Indigo Powder About the Product: Natural Indigo Powder is an excellent natural alternative to chemical Hair Dyes. When used with natural henna powder it gives a dark brown to shiny black color. Gives a natural and attractive indigo blue color to your hair. Natural alternative to chemical Hair Dyes. When used with natural henna powder it gives a dark brown to shiny black color. Directions to Use: Take the required amount of Indigo powder in a non-metallic bowl.

100% Natural Indigo Powder Organically Grown 227g / 1/2 lb / 8 Ounces

This indigo powder is safe for use on all kinds of hair. Indigo can be applied in one step or two step process to get different tones such as Black,

100% Natural Herbal Indigo Powder For Hair Dye / Hair Colour - 227g

Indigo Powder Hair Benefits: Powerful benefits of Indigo Powder for hair health

Attar Ayurveda Indigo Powder, Is The Best Hair Dye?

Organic Indigo Powder for Hair Dye, Black, Coloring, for Use with Pure Henna |50 Grams (1.7 Ounces)| Henna Cosmetics

Indigo Powder

What Is Indigo Powder and Henna - Kama Ayurveda

Is Indigo Safe? Answering Your Questions, Cover White/Gray Hair Using Henna

What Is Indigo Powder? - TeluguWiki

Indigo Powder