This product does work!!!!! I would leave it in a little less then the twenty min recommended. But it took the horrible color out and made it a golden blonde. If your hair is black it probably will turn it orageish so be prepared to dye it . but you can dye it the same day. Does stink though. but if you wash it and condition it the smell fades. Over all greatly satisfied

I'm a little torn on how I feel about this product. On one hand it did take some of my dye out, on the other my ends are still orangey and darker than my roots.
I paid $9 and some change for this at Walmart, and I got 2 boxes since I have long hair. One box came with plastic gloves, the other box came with a plastic cap to put over your hair. Weird. I used my own hair dying bottle to apply this, and there was enough product (w/2 boxes together) to fill the 10 oz. bottle pretty much to the top. It looked like I would have a lot left over, but I used all of it and I'm glad I did 2. Like the other reviews state, this stuff STINKS. A lot. It smells like sulphur + burning rubber + farts. It's also pretty runny, so it's a little difficult to apply w/out getting it everywhere. I rinsed for about 30 minutes then conditioned as usual. I highly recommend having a radio on while you're rinsing, half an hour seems like forever if you're waiting! I shampooed about every 2 songs for a total of 4x.
The results: My hair doesn't seem damaged, although it feels a little more dry than before I did this, and it is overall lighter. I have sandy light brown hair naturally, and I'd been dying it an auburn color. I got tired of how the auburn fades to a grody orange, so I decided to go back to my natural color. My ends are still a lot different than my roots so I might do another round of Color Oops to see if it removes any more color, although I'm not cherishing the idea! I think this might work better on freshly dyed hair, but it didn't wreck my hair and it did work a little so I'm giving it a 3.

Definately works. I put a color on to bleached hair that turned greenish on me. I ran to Walmart where this cost $6 or so and it took all of the color off quickly.

I used this a few times to remove color buildup from my hair, but beware--when you re-color it will turn out very dark and ashy, which makes choosing a new color difficult! Also, there's a very high chance that you never washed ALL of it out--even if you think you did. So even if you don't re-color your hair might turn out dark over the next few days.

OMG this stuff may have cured me of my hair coloring addiction lol. I had been dying my hair all sorts of colors for the past 2 years and was never satisfied. The past 3 months or so I had been dying my hair different shades of demi permanent red. I got sick of it and realized it didn't flatter my skin tone that well, so I got 2 boxes of Color Oops but didn't expect anything fantastic(I had used color removers before with blah results). At first I was somewhat annoyed when washing it out in the shower because it turned orangey blonde with yellow thick streaks in random areas. I was like great, I'm going to have to dye over it forever until my hair grows out... BUT THEN, I got out of the shower after rinsing for 20 or 30 minutes and it was a more normal shade of blonde!! And then Iput a little Fanciful Silver Lining rinse in it and blow dryed. Wow!!! My hair is back to something very close to my natural color!! And I barely put any of the Fanciful rinse in it. My hair looks healthier than before I used the Color Oops somehow. It does feel a little dry though, but I am soo happy with this color. I took off one star though because it did lighten all of my roots, which I would've preferred to stay dark. But they blend in nicely.

This stuff blew my mind. This significantly lightened my black hair without half the damage bleach did. After I used this my hair was a deep (mostly) natural looking red from black. There was hardly any brassiness which impressed me and my hair didn't feel like straw.
I'm naturally strawberry blonde but I've dyed my hair so many different colours. It didn't phase me to go from black to silver when my hair was short but I've worked hard to grow it out so I didn't want to do any extreme damage. I've been dying it black for about 2 years now.
I purchased two boxes because I have thick hair that goes past my shoulder blades, but I actually only ended up using one.
My recs:
-If you have wavy or curly hair like I do, I find if I straighten the day before makes it easier to distribute product
-This stuff SMELLS. I had to throw out a shirt and tshirt because I couldn't get the smell out. Beware
-I wish I used this twice before redying my hair. I think it would have helped because I'm not as light as I wanted
-I use the k-pak system regularly but I used it a few extra times after this which also helped
-If you're dying your hair after, purchase a MUCH lighter colour. I chose a light/med brown about 2 shades lighter than what I wanted but I expected it to turn dark. My hair went about 4 shades darker than the dye should have been, which I read can happen. That was my only bummer about this.
I would rebuy, it was $17.99 which is expensive especially if you need two boxes but well worth it!

I had great expectations from this product, reading all the 'great' reviews, so I thought i'd give it a try. My hair was previously bleached and i had dark brown hair dye over it, i wanted to use color oops to get it to a lighter shade so a red hair dye would show. After using it and drying my hair it seemed to work a little bit. But the next time I showered my hair went back to its original look.. dark all over again. My friend had the EXACT same problem, but she had even lighter hair than me!

I don't recommend this product. And it keeps this awful stench in your hair.

There is no doubt that color correcting products - Ion Color Corrector, Colorfix, Color Oops - they are all singularly fantastic if you've singularly made a mess of your hair color. They do what they say they do (mostly) and they really can improve a terrible color situation.

That said, they all smell like Satan himself has ascended from hell and had a sexy party in your bathroom. They will try to cover up the smell of sulfur with some delightful floral concoction but let's be honest: the active ingredient (the workhorse of all the color correctors) is a derivative of sulfur so no matter how many fake flowers you cram into the bottle, it's gonna stink. It's gonna stink out your bathroom and your hair and everything it touches. This is why, in the interests of not stinking out my house and driving my husband to homicide, I put a plastic shopping bag over my hair, tie it by the handles in a cute little knot at the top of my forehead and whack a towel over the whole mess. It keeps your scalp warm, so no need to sit next to a heater while the goo wicks away those pesky color molecules. It contains the aroma of sulfur quite nicely and doesn't give me nearly as much of a headache as when I leave it to fester in the open air.

Advice aside, it really does work - taking my hair from a dark brown to a lovely (orangey) light blonde in twenty minutes plus twenty arm ruining minutes of rinsing. It does work, so I can overlook the smell and the mess. Color Oops is my favorite simply because it smells the best and applies the easiest of the removers I have tried. Ion Color Corrector gave me a headache for a day and a half. This, thankfully, did not. Expect a little dryness and porosity - though I attribute this to four rounds of shampooing more than anything - and you'll be fine.

This did exactly what I needed it to do. I colored my hair a light auburn shade and ended up looking like a clown. I went to walgreens and picked up a box of color oops - extra strength, as well as, a box of colorsilk light brown (a neutral), and a box of colorsilk ultra light sun blonde (golden).

I mixed the color oops according to directions and placed in hair all over. I did put a shower cap on and also a towel over that as the house is a bit cool in the winter. After 25 minutes, I rinsed the color oops out of my hair for at least 10 minutes. I washed with a clarifying shampoo, and then used a protein enhanced conditioner and rinsed well again. I blow dried my hair, which now looked a light bright orange in color. ( I have colored my hair many times, so I new it wasn't going to go back to a natural color). I mixed the colorsilk, light brown and colorsilk ultra light sun blonde together in my own mixing container and then placed on my dried hair. Thanks to all the great reviews telling me to go lighter and not leave on for very long, I had an idea of what to expect.

Within 5 minutes I could see my hair taking the color and decided to leave it on for 10 altogether and then rinse.

The result is a lovely medium to dark blonde hair color with lots of depth. There is some light red running through, but I would say it is more gold than anything. I would say it is my definition of a medium golden blonde hair. It really looks nice. My hair is a little dry, but a little moroccan oil or deep conditioning will help that.

Overall this product saved the day and I am extremely pleased with the overall results.

Absolutely amazing. Took all the dark brown out of my hair and left me with light brassy brown from my previous dye job. I didn't even care that it was brassy because I was so glad to have the too-dark brown gone!

Note: My hair is very thick and past my shoulders, so I bought two boxes which was the perfect amount to really saturate my hair. You don't want to end up with too little product.

One caveat: The nasty sulfur smell. It's a good idea to be in a room with very good ventilation when you're applying this stuff!