Fiona’s fear: I use Pantene’s Brunette range of shampoos to maintain my dyed brown hair. This is met with huge scorn by my mother in law who insists that nothing is more effective at maintaining glossy brown hair than rinsing it with an espresso or two once a week. Is coffee an effective way to treat and prolonged coloured hair or is it as useful as the beer rinse (ie- not particularly).
The Left Brain responds:
I love questions like this because the answer can be easily proven by a simple test. But before I explain, let’s talk about products for brunette hair.
Brains on Brunettes
Products like Pantene’s Brunette Expressions
Colorful chemistry
To find out if coffee will color hair I brewed up a pot of double strength espresso. Then I took a tress of bleached blond European hair. I used bleached hair for two reasons: the bleaching makes the hair more porous so it soaks up more of the coffee and the coffee color will show up better on light blond hair. As you can see from the “before” picture below, the hair is very blond. (This will vary depending on the color reproduction of your computer monitor.)
Pre-coffee
Then, I soaked the tress in coffee overnight to see how much the color would change. Here’s how the tress looked after soaking in double strength coffee for 12 hours. As you can see, the hair is a little bit darker, but not very much. (There’s a slight color shift due to the camera, but to the naked eye the hair color barely changed). If the effect is this slight on blonde hair, it will be almost impossible to detect on dark hair. So I’m afraid I’ll have to say that your mother-in-law’s assertion is incorrect.
Post-coffee
The Beauty Brains bottom line
Based on this quick experiment, I conclude that while coffee can stain hair the effect is too slight to be a practical hair treatment. (I realize that a larger scale test with multiple hair types is required to verify these results, but based on my prior experiences in the lab this color change is pretty typical.) So don’t expect to see a Starbuck’s Shampoo or organic hair color on your local supermarket shelf anytime soon.
What do YOU think? Have you ever used coffee or other homemade hair colors? Leave a comment and share your colorful concerns with the rest of the Beauty Brains community.
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Fun! Can you do this with one of those ‘color-boosting’ products and post it up, as well? I’m curious how much of a ‘boost’ these products really give, too. (And also interested if my hair will turn too dark because of such a product). I’d do it myself but alas my hair is not very bleached nor very blonde, haha.
I don’t know. The way Starbucks is going these days, I wouldn’t be surprised if they did start selling coffee shampoo
Very interesting! I often use coffee in my henna mix since I was under the impression that it would help darken my final colour, but this seems to suggest otherwise. I might have to take a look at these colour rinses.
I should have saved the hair from my last cut, I could have made my own testers!
This reminds me; I’ve wanted to do a test with Thai tea for a while now. That stains the hell out of everything it touches …
Correction: Pantene Brunette Expressions don’t have a significant concentrations of dyes that can stain hair. Its dye concentration is just too low.
BTW, coffee is quite damaging because it is high in pH and that gives coffee its bitter flavor. It can loosen cuticles similar to that perming and coloring.
I have a question Brains. How do lemon juice dye hair? And it is damaging? It is permanent?
I read once that used coffee grounds made for a good shower scrub because the caffeine “wakes up your skin” or some such, so I tried it. I can’t tell you anything helpful about the scrub, but I can tell you that after I climbed out of the tub I toweled off and tinted all my towels brown.
So – word to the wise. If you put coffee in your hair, RINSE WELL.
Fabulous! I must go and do a victory dance in front of my mother in law with the song of I Told You So to finish.
Thanks Brains
Very interesting. I wonder if walnut hulls would have any effect? They stain everything! Skin, nails, clothing.
Excellent, thanks!
I read in a book that coffee and black tea are supposed to enhance and tone dark brown hair, but it diddn’t say much about blone hair. I also read that rosemary and walnut shells ares supposed to make a difference. I’m planning to try some of these soon, so I’ll try to get back and say how I went!
Oh, and henna has been used for a long time too. It comes in varying ‘colours’, strenghts and all that.
And something about parsley tea and raspberry leaf tea too.
peter johnson and the argonauts
I do notice that the Aveda color conditioners–the Black Malva and Clove definitely color my highlights–really tone them down and blend them back into my medium to dark brown hair. They last through several shampoos and don’t leave that smell that I dislike like the Frieda glazes.
You have to use a fixative to activate the coffee :ie apple cider vinegar, please redo the experiment, so we can have fun with the new results…(there are many articales on line to find the exact amount of vinager/coffee solution…