Please note, these tips only apply if you have used pure natural henna, or pure natural henna mixed with other plant products. They do not apply if you have used henna which is not pure and has artificial chemicals mixed with it.
Putting a brown or black natural hair colour on top
Dyes that are natural and contain indigo include It's Pure Organics Natural Brown or Dark Brown or Very Dark Brown. The Logona browns do not contain a lot of indigo and are not very dark. The It's Pure Organics Dark Brown contains a lot of indigo so this will a darker shade. Any of these would help to darken your too-bright henna colour, but if none of these are sufficient to tone down the red, or if you have already used one of the brown shades, then you could try 100% pure indigo.
There is no fixed rule about how long to leave indigo on for – the timings given above are very approximate. It depends on how porous or how resistant to dye your hair is. The only way to tell before putting it all over your hair is to do a STRAND TEST FIRST (if you like you can buy a tester sized packet to strand test before you even buy a whole packet).
One way of helping to ensure the indigo does not go too dark is to dilute it with cassia powder about 20% to 25% indigo powder to 80% to 75% cassia powder. If mixed with water the cassia is colourless and so dilutes the colour of the indigo. Again STRAND TEST FIRST to avoid an unwanted result.
Other ways to cope with henna that is too orange, red or brassy:
The golden rule to avoid all hair dye mistakes is to STRAND TEST FIRST.
Different hennas will have slightly different qualities - some more red, or more orange, some deeper, some more burgundy. You can ask your supplier about the quality of the henna you buy.
Soaking the pure henna in something acidic overnight facilitates the maximum dye release. This generally makes the colour deeper, more red and less orange. (This applies to pure henna only, not henna mixtures such as Logona dyes).
Be cautious when putting pure red henna on hair which is very light coloured. Generally henna will be much more brassy/orange when you put it on its own directly on to white or very light grey or light blonde hair. If you put it onto brown hair it is much less red/orange; the darker brown your hair is the less red/orange it will be.
Mix a little indigo with the henna - not enough indigo to make it go brown, but just a little to tone down the red/copper.
I can’t guarantee any of the above will be right for you because there are so many variables (for example, your starting colour, your hair chemistry – how porous or resistant your hair is). For these reasons, the same product will be different on different people’s hair.
Don’t be put off by being afraid of a disaster. Without experimenting you will never know if it will work. If you’re worried, just experiment on a little bit of your hair – STRAND TEST FIRST!
Notes about differences between the products we sell:
The It's Pure Organics Dark Brown and Very Dark Brown Shades are the coolest and least red browns we sell.
The Logona Herbal Hair Colour Powders are not as dark and cool coloured as the It's Pure Organics. Out of the Logona range the least red are Brown Umber, Natural Brown, Coffee Brown, Chocolate and Henna Black. The Logona Herbal Hair Colours with more henna in them that tend to be brassy when you put them directly on to white hair are the Henna Red, Flame Red and Mahogany.
The Logona Colour Cream with the least red in it is the Nougat Brown (though this is not very dark, more of a blondish beige on grey hair). Because the Nougat is not very dark and it does not contain any Indigo it will not seriously tone down a colour that is too red.
The Its Pure Organics Body Art Quality Henna, as hennas go, is a little more red and less brassy orange on white hair. Some cheaper, poorer-quality henna tends to be a lighter orange and less of a rich red colour.