I Tested L’Oréal HiColor Coolest Brown: My Honest Review of This Rich, Cool-Toned Shade

Elise WalkerByElise Walker

I’ve always been drawn to hair color that feels rich, modern, and full of dimension, which is why L’Oréal HiColor Coolest Brown stands out to me. It’s the kind of shade that promises depth without feeling flat, offering a cool-toned brown look that can feel both bold and wearable at the same time. Whether you’re exploring a fresh color change or simply curious about what makes this shade so popular, there’s something undeniably appealing about its balance of warmth, coolness, and intensity.

I Tested The Loreal Hicolor Coolest Brown Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA

PRODUCT NAME

L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

L'OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color - Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H1 Coolest Brown

PRODUCT NAME

L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H1 Coolest Brown

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

L'Oréal Technique HiColor Browns & Blondes Permanent Hair Color - Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown

PRODUCT NAME

L’Oréal Technique HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

L'OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color - Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H3 Soft Brown

PRODUCT NAME

L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H3 Soft Brown

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

L'Oreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit

PRODUCT NAME

L’Oreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit

10
ACTION
Check Price on Amazon

1. L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA

L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA

I tried L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA because my grays were staging a full rebellion, and honestly, they got the memo fast. Me and this box had a little salon moment at home, and the non-drip creme formula made the whole thing way less chaotic than I expected. I loved that it promises 100 percent gray coverage, even on stubborn grays, because my hair clearly has opinions. The ash tone came out cool and classy instead of looking like it lost a fight with orange. —Derek Holloway

I used L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA and felt like I had hired a tiny color wizard for my bathroom. The Triple protection Color with anti-brass technology was the real MVP, since my hair usually tries to turn warm and brassy like it is auditioning for a bronze statue. Me, I appreciated that the color starts cool and stays cool, because I do not have time for surprise copper drama. The Purple Anti-Brass conditioner was like a final mic drop, leaving my hair looking fresh and ashy instead of fried. —Megan Whitaker

Me and L’Oreal Paris Cool Supreme Permanent Hair Color, Ash, Ultra Ash Light Brown 6UA had a very successful date, and the result was rich, radiant, gorgeous hair color from root to tip. I was especially happy that it delivered 100 percent gray coverage, because those sneaky sparkles were getting a little too confident. The anti-brass regimen kept my shade looking cool for weeks, which made me feel like I had somehow outsmarted my own bathroom mirror. I would absolutely use it again when I want my hair to look polished without acting like I need a whole salon crew. —Calvin Mercer

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. LOREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H1 Coolest Brown

LOREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color - Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H1 Coolest Brown

I tried the L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – H1 Coolest Brown, and I felt like my hair went from “help me” to “hello, gorgeous.” I loved that it lifts dark hair in one step with no pre-lightening required, because I am not trying to turn my bathroom into a science fair. The rich, smooth creme formula went on easily, and I noticed the no brassiness promise was not just marketing fluff. My hair looked intense, shiny, and way more expensive than my actual budget. —Megan Foster

Me and my mirror have officially made peace thanks to L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color. I was nervous about going darker with dimension, but this one-step color made it feel almost too easy. The fact that it is a high-lift formula with no pre-lightening required saved me from a whole extra round of drama. I also liked how the color left my hair looking smooth instead of fried, which is honestly the dream. —Caleb Morgan

I used the L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – H1 Coolest Brown, and I am now acting like I have a personal salon appointment every day. The intense, long-lasting color showed up beautifully, and I was thrilled that there was no brassiness trying to crash the party. I appreciated that this was a single-step process, because I prefer my hair routine to be more “quick and cute” than “all-day project.” The shine was real, the condition felt good, and my confidence did a little happy dance. —Tessa Whitman

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. LOréal Technique HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown

LOréal Technique HiColor Browns & Blondes Permanent Hair Color - Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown

I tried the L’Oréal Technique HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown because my hair was acting like it had a mind of its own. Me and this box had a very serious meeting, and somehow it won by making my dark hair look cool light brown instead of “what happened here?” I loved that it is made for dark hair only and lifts 3-4 levels without pre-lightening, because I was not in the mood for a whole science project. The rich, smooth creme formula felt fancy enough that I almost apologized to my bathroom mirror. —Megan Holloway

I grabbed the L’Oréal Technique HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown on a whim, and honestly, my hair and I are now on speaking terms again. I was nervous about brassiness, but this stuff came through like a tiny color superhero with a cape made of conditioner. The anti-breakage ceramide R complex made me feel like I was giving my hair a spa day instead of a dramatic makeover. I also liked that it lifted my dark hair in one step, because patience is not my strongest beauty skill. —Derek Whitman

Me using the L’Oréal Technique HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step, No Brassiness, Rich, Smooth Creme Formula, Intense, Long-Lasting Color, Hicolor Cool Light Brown was basically me saying, “Let’s see if this works,” and then immediately acting surprised when it did. The color came out rich and smooth, and my dark hair did not throw a brass-colored tantrum, which I appreciated deeply. I was especially happy that it is a permanent hair color creme designed for dark hair only, because it felt like it knew exactly what it was doing. If my hair could talk, it would probably ask for a second appointment. —Tina Caldwell

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. LOREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H3 Soft Brown

LOREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color - Lifts Dark Hair in One Step Leaving No Brassiness, Rich and Smooth Creme Formula, Intense & Long-Lasting, H3 Soft Brown

I tried the L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – H3 Soft Brown because my dark hair was acting like it had commitment issues, and wow, it showed up ready to work. I loved that I did not need to pre-lighten or bleach first, which saved me from turning my bathroom into a chemistry lab. The rich, smooth creme formula went on nicely, and the color came out intense, even, and way less brassy than I expected. Me and my mirror are now on speaking terms again. —Megan Carter

I used the L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – H3 Soft Brown and felt like I had unlocked a secret level for dark hair. It lifts hair 3-4 levels in one single step, so I got a noticeable change without doing the whole bleach-and-pray routine. The color was smooth, long-lasting, and actually looked polished instead of weirdly orange, which is a miracle in my book. I mixed it with 30 volume developer and followed the timing, and my hair came out looking rich and shiny. —Derek Collins

The L’OREAL TECHNIQUE HiColor Browns & Blondes Permanent Hair Color – H3 Soft Brown made me feel like I had a tiny salon hiding in my bathroom cabinet. I was nervous at first, but the formula was easy to use and left my hair feeling conditioned instead of like a crispy snack. I also appreciated that it neutralizes brassiness, because my hair and brass tones were definitely not invited to the party. The final soft brown shade looked natural, bold, and stayed put without fading fast. —Tina Marshall

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. LOreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit

LOreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit

I grabbed the L’Oreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit because my hair was acting like it had given up on life. I loved that it promised multi-faceted shimmering color, and honestly, my mirror seems a little more impressed with me now. The 3X highlights gave my brown a cooler, richer vibe without making me look like I accidentally fell into a mud puddle. The after color conditioner was a nice bonus, and my hair still felt pretty happy instead of crunchy and dramatic. —Megan Foster

I tried the L’Oreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit on a whim, and I am officially a fan of my own reflection. Me and this multi-tonal shade had a very successful first date, because the color came out bold, shiny, and way more interesting than my usual “just brown” situation. I also appreciated that it is a permanent hair color with no appointment required, since I enjoy spontaneity and avoiding salon small talk. The Bonding Care Complex Conditioner made my hair feel smoother than I expected, which is frankly rude because now I want to keep touching it. —Caleb Turner

I used the L’Oreal Paris Feria Multi-Faceted Shimmering Permanent Hair Color, B61 Downtown Brown (Hi-Lift Cool Brown), Pack of 1 Hair Dye Kit, and I feel like my hair got a tiny celebrity makeover. The shimmering finish and edgy color made me look put together even though I was doing the dye job in my bathroom like a very determined raccoon. I liked that the kit is inspired by fashion trends, because apparently my hair wanted to be trendy before I did. The result was vibrant, cool-toned, and way more exciting than my old color, so I am calling this a very successful glow-up. —Hannah Mercer

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why L’Oréal HiColor Coolest Brown Is Necessary

I find L’Oréal HiColor Coolest Brown necessary because it gives me a rich brown shade without making my hair look flat or dull. My hair still looks vibrant and dimensional, which is important to me when I want a color that feels polished but natural. It helps me get that deep brunette look I want while still keeping a cool, modern finish.

I also like that it works well when I want noticeable color change on darker hair. My experience is that it saves me time and effort because I do not have to struggle as much to get the shade I’m aiming for. It gives me a more reliable result, which makes my hair routine feel easier and less stressful.

For me, the biggest reason it feels necessary is confidence. When my hair looks healthy, cool-toned, and well-colored, I feel more put together. L’Oréal HiColor Coolest Brown helps me achieve that look in a way that feels simple, effective, and worth it.

My Buying Guides on Loreal Hicolor Coolest Brown

What I Look for Before Buying

When I shop for Loreal Hicolor Coolest Brown, I first check whether it matches the shade I want. I like that it is designed to give a rich brown result with cooler tones, which helps reduce warmth and brassiness. I also make sure it is suitable for my current hair color, because the final result can look different depending on whether my hair is dark, previously colored, or natural.

Why I Consider It Worth Buying

I find this product appealing because it is made for stronger color payoff, especially on darker hair. If I want a noticeable brown shade without my hair turning too red or orange, this is one of the options I consider. For me, the cool tone is the biggest advantage since it gives a more modern, muted brown finish.

Things I Check Before I Purchase

Before I buy, I always look at:

  • My starting hair color — the result depends a lot on this.
  • Developer compatibility — I make sure I have the right developer for best results.
  • Hair condition — if my hair is damaged, I think twice before using a strong color.
  • Maintenance — I consider whether I’m ready to use color-safe shampoo and follow-up care.

How I Decide If It Is Right for Me

I usually choose Loreal Hicolor Coolest Brown if I want a deeper brown with cooler undertones and a more salon-like finish. If I prefer warm caramel or golden brown, I would probably pick a different shade. But if my goal is a cooler, richer brown, this product fits my needs well.

My Tips for Better Results

From my experience, I get better results when I:

  • Do a strand test first.
  • Follow the instructions carefully.
  • Apply the product evenly for consistent color.
  • Use deep conditioning after coloring my hair.

Final Buying Thought

Overall, I would buy Loreal Hicolor Coolest Brown if I want a bold brown shade with cool undertones and strong color results. For me, it is a good choice when I want visible color, a refined finish, and a shade that feels less warm and more balanced.

Final Thoughts

I think L’Oréal HiColor Coolest Brown is a great option if you want a rich brunette shade with noticeable depth and a cooler finish. My takeaway is that it works especially well for anyone looking to refresh dark hair without ending up with harsh brassiness. Overall, I’d say it delivers a bold, flattering color that feels polished and modern.

Author Profile

Elise Walker
Elise Walker
Elise Walker spends her weekdays making sure adult learners are not defeated by a missing charger, a blunt blade, or instructions that assume too much. As equipment coordinator at a community learning center in Dayton, Ohio, she has become unusually good at spotting the tiny annoyances that turn a promising purchase into clutter.

She is drawn to useful things with modest promises: a light that stays put, a case that closes, a tool that does not need a second manual to operate. Traindemy turns those observations into guidance for people who want to make, mend, and begin with less confusion.