Rainbow Research

Great color, great longevity, easy application. It is nice that I can customize my color! I get the best results mixing in water and vinegar. I have tried coffee, green tea, etc., my hair...

I started using rainbow Henna about 10 years ago after a very bad allergic reaction to a name brand dye, that left me with rotational vertigo with nausea for about a year and a half after the...

All though they do have a nice variety of colors, I do want more of a dark red color. I bought burgundy or dark auburn from a health food store and applied to my hair. It ended up looking more dark...

Purchased blonde.I have mostly gray/white hair.Didn't see any coverage,very messy.Contacted the company twice via email to see if they could reccomend another color to cover the grays(I have...

I've been using henna for 10 years, many brands/suppliers from Mehandi, H4H, Hennasooq, Lush, Rainbow, etc. In all honestly, I've never found one particular brand or type of henna to be that much...

I've used the LUSH hennas and the Rainbow Lab hennas for about 3 years now- I recommend them both. I will say that years ago I used henna for the first time and it turned my hair into straw- it was...

This review is for the chestnut brown shade. I tried it once, after doing some research on henna and I mixed it then let it sit over night before using, and it didn't work very well. I did some...

I tried to use this in 'black' over previously hennaed hair. I thought since it was so indigo heavy (there is some henna in there too obviously) it'd cover the red and turn black but lo, my roots...

I have used the product several times now on my hair and though each time its a slightly different color I have finally gotten it to where I LOVE the color. At first it was just too red but now its...

I'm in my mid-40s with shoulder-length, light brown very fine hair that is starting to thin out. I found this product at my local health food store and decided to give it a try. The first time, I...