Is indigo powder is safe for hair?

How to apply Indigo Powder on hair - Step by Step Process [With Images] – The Henna Guys

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

Indigo Powder Hair & Beard Dye / Color 100 Grams - The Henna Guys

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

Dyeing My Hair with Natural Indigo

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

Indigo Powder Hair & Beard Dye / Color 100 Grams - The Henna Guys

Bio-Organic Indigo Powder for Hair Colour – Indus Valley

Indigo Powder is a safe alternative to chemical hair dyes which often contain petroleum derived ingredients such as paraphenylendiamine (PPD), Ammonia,, By Deewal Australia

Indigo & Henna Powder Organic for Hair Colour -100 Grams each -Natural Mehndi

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

Natural Indigo Powder - 227 Gm

Bio-Organic Indigo Powder for Hair Colour – Indus Valley

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

Indigo & Henna Powder Organic for Hair Colour -100 Grams each -Natural Mehndi