Clairol ColorStrong Dark Brown 4.0 - Barcelona

4.6 5 0 79 79 NEW Clairol ColorStrong gives you multi-dimensional color and reinforces the internal structure of your hair. What’s the secret? The continuous color + bonding system has AHA in every step: <li>Bonding Primer, <li>Permanent Color <li>Bonding Treatment.
Clairol ColorStrong Dark Brown 4.0 - Barcelona
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Reviews

08/01/2025
Clairol yes
This product is great coverage, no smell, no burning on scalpel The color was perfect and look natural , left my hair soft and shiny. I love the color all the way around. I would highly recommend this to anyone , e especially if you have gray hair to cover perfect for that awesome coverage, the exact same color root to end.
  • Home Tested with free product
08/01/2025
Works Great
I have a lot of gray hair that comes in quickly, so I was curious if this Colorstrong in Barcelona (dark brown). Well, I have to say I am pretty impressed. Not only did it cover up all the gray very well, it is lasting and no gray is coming through. This product was easy to use, and I love the color. I would indeed recommend.
  • Home Tested with free product
08/01/2025
Very nice product. Highly satisfied
Clairol Colorstrong Dark Brown 4.0 Barcelona is a very nice product the color turned out great, it is the best smelling hair color treatment I have ever used, it wasn't harsh on my hair after coloring and even the gloves that come with it fit very nice. I am extremely satisfied and will definitely be using this product from now on to color my hair.
  • Home Tested with free product
07/01/2025
Love it !
This is such an amazing haicolor , I am definitely making a switch. Totally love it , highly recommend it . It leaves your hair feeling soft and doesn’t seem damaged like my previous hair colors . The color is nice and held up pretty well. Love it totally.
  • Home Tested with free product
07/01/2025
My new favorite hair color
I tried out my new Clairol Color-strong hair color, the color of Barcelona. I was very excited to try this because I needed something that can cover my grays better. I have to say, it did perfectly. I love that it lasts longer than other brands, it gives my hair coloring some dimensions and very easy to use.
  • Home Tested with free product
07/01/2025
perfect
I had previously dyed my hair purple and could not find a product to cover it up and get my hair back to its original color. This product was amazing and did the trick.
  • Home Tested with free product
07/01/2025
Barcelona dark brown 4.0
It was nice to try out the new Clairol Colorstrong hair color. Packaging is beautiful, I really like the background of the city of Barcelona. The bonding primer was a nice touch, and there was plenty of it even for my long hair. The same goes for the conditioner—there’s lots of it! The dye is very thick but I still managed to get it on me. Easy to wash off though. The scent is so nice as well. It really does have 100% gray coverage. It washed off my hair easily. My hair looks healthy and shiny. It’s nice that it has zero ammonia and it’s a vegan formula. The only thing I didn’t like was that it stained my bathtub so now I’m going to have to scrub. Overall, it’s a great product!
  • Home Tested with free product
06/01/2025
Clairol Colorstrong Hair Dye- Barcelona
I was a little hesitant about this color because it didn't look as rich on the box as the dark brown that I usually use. It looked pretty dull. I actually really love the color! It's exactly what I was hoping for. It's a nice, shiny, rich, dark brown. The process was pretty easy and the directions were easy to follow. My favorite thing in comparison to the dye I have been using is that this one did not have such a strong chemical smell. Usually I can smell it in my hair for several days after, but this one hardly left any chemical smell after! I will definitely use this kit again! I love that it is ammonia free!
  • Home Tested with free product
06/01/2025
Color
I really love this dark rich color its beautiful was very easy to use and didn’t have a very strong odor. It has dried out my hair a little bit it comes with some nourishing conditioner.
  • Home Tested with free product
06/01/2025
Good product
I love Clairol ColorStrong - Barcelona. This covers gray hair longer and better than any other brand I have tried and the color is beautiful. It is vibrant and saturated but it bled out every single wash over 7 washes, so far.
  • Home Tested with free product
04/01/2025
I really liked this ! But i had dark red
So before they fixed the issue with this home test i dyed my hair from blonde to burgundy so the end result still had a red tint but the process was great .. the bonding treatment before and after really made my hair feel great i think if i put the bonding on up further all the red might be completely gone. I love the color and my hair feels healthy smells better and i felt more comfortable with styling. I really liked this hair dye and it came off the skin easily that ALONE gets it the 5 stars!!
  • Home Tested with free product
04/01/2025
Covers Gray
Clairol ColorStrong Dark Brown 4.0 - Barcelona was a great hair color. The coverage is good and covers the gray while staying close to my natural color. My hair felt strong and healthy afterwards and the color has stayed bold.
  • Home Tested with free product
03/01/2025
Love this
Love this hair dye you get a decent amount for one box to complete your hair definitely an awesome color recommend this to anyone who is looking to dye their hair brown it is the perfect shade of brown and definitely helps cover any other color you have in your hair
  • Home Tested with free product
03/01/2025
Love it!
I really loved this hair color. Probably the first time my hair actually felt healthier after the coloring process. The color is a beautiful dark brown, but it is amazingly shiny and catches the light beautifully. The 3rd step made my hair so soft, and I was so happy that there were minimal chemicals. A++ all around. I would definitely recommend this to friends in the future.
  • Home Tested with free product
03/01/2025
Rich, Vibrant, and Long-Lasting Color!
I recently tried Clairol ColorStrong Dark Brown 4.0 - Barcelona, and I couldn’t be happier with the results! The color is rich, natural-looking, and gave my hair a beautiful shine. It’s the perfect shade of dark brown, with just the right balance of warmth and depth. The application process was straightforward, and the formula felt gentle on my hair, leaving it soft and nourished rather than dry or brittle. I was also impressed by how evenly it covered grays—completely seamless! After several washes, the color remains vibrant and fresh, which is a huge plus. If you’re looking for a reliable, salon-quality color at home, this one’s a winner. Highly recommended!
  • Home Tested with free product

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