Garnier Olia Oil Powered Permanent Hair Color, 1.0 Black
Garnier Olia Oil Powered Permanent Hair Color, 1.0 Black
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Garnier Olia Oil Powered Permanent Hair Color, 1.0 Black

26.1K ratings

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4.1 out of 5 stars
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26.1K ratings21K reviews
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Pros

  • : Has a non-overpowering, gentle, and floral fragrance.
  • : Application process is quick and straightforward.
  • : Produces a deep, vibrant color with good coverage and shine.
  • : Covers gray hair well with varying degrees of thoroughness.

Neutral

  • : Can be rich and vibrant, but may appear darker than expected.
  • : Can be vibrant and long-lasting, but may fade over time.
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Showing 1-3 of 21,043 reviews

Jul 23, 2026
Reviewer name: Laurie
Top Reviewer
Item details
Hair color shade: 6.0 Light Brown
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I absolutely loved this hair coloring. I've never used this brand before, and I really enjoyed it. it was a little bit more expensive than what I usually spend, but it was worth it. The color came out beautifully and it was easy to apply. It was a thick, rich, and creamy lather so it was easy to apply with little to no dripping. It smelled really nice too and the conditioner they give you to use after you've finished coloring your hair is amazing! It really makes your hair soft, shiny, minimal tangles, and it just leaves your hair feeling soft and fresh.

Helpful?6a1cbc90-4280-11ef-a6e5-29dcda2b70ec22150930
Jun 19, 2026
Reviewer name: Rrhae
5 out of 5 stars
5 out of 5 stars review

Pleasantly surprised, I got box color results!

I was so nervous to try and color my light brown hair that was color treated. It had been 6 months since my last color, but I used a professional custom home service and it was never quite right. My hair pulls red easily and I have to tone a lot. I have a lot of chemical sensitivities so the semi permanent colors had more of an effect on my skin than the permanent because they washed out and I was exposed every wash. I just can't do ammonia or bleach anymore because of asthma and dry scalp. I can't afford the salons and have been cutting my hair and doing my own color since the pandemic in 2020. I watched a lot of color theory videos and many try on simulations for every company. I was prepared to suffer through an ammonia process until I saw this and saw that it had no silicones and parabens, which I have to strictly avoid in all products now. I can't find it anywhere on the box, but I am sure I read somewhere that Olia doesn't pull brass and that's why I chose it. The try on tool was also very useful in choosing the color. I did go with the lighter color as suggested. My light brown/dark blonde was very dull from medical issues. I wasn't expecting more than a shine and really expecting a reddish dark blonde as that's usual for my hair. I can't believe I got the box color results. I chose the lightest ash blonde hoping it would be enough coolness to give me a golden natural blonde with no brass. I got the darkest results color on the box and I'm so happy. I did use one purple tone rinse before I dried it the first time, but I didn't need it. It was a temporary one and actually dulled the final result a little. The second wash I held off the purple and used a good shampoo to clarify and it's so much shinier and brighter. I followed the directions exactly with very dirty hair and timing, though my hair is so short I really do an all over application quickly and then let it set for the full time. I am so happy with this result. Now I wonder if I use the same color or go to the 9 so it doesn't go blonder. I guess my roots will still need this color. My hair feels nice and my scalp is not drier than before. Since I can avoid toners it's a win and I can work on my scalp in between colors. My hair is short because of thin patches after menopause and medication. I don't have gray yet, so this gentle color gives me time to grow my hair back. I really recommend trying it if you need a gentle color and want to avoid brass. I'm allergic to nearly everything in beauty. I did do a patch test and strand test, though my strand test was darker than my beautiful final result, probably because my mixture was off.

Review from garnierusa.com
Helpful?6a1cbc90-4280-11ef-a6e5-29dcda2b70ec22150930
Jun 25, 2026
Reviewer name: S
Top Reviewer
Item details
Multipack quantity: 1
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

color fades over time

Less hair breakage than traditional hair dyes. Color is great for about a week, then it goes from medium blonde and gets lighter to a light blonde. Color does not stay the same until next hair coloring.

Helpful?6a1cbc90-4280-11ef-a6e5-29dcda2b70ec22150930
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