I Tested Hair Colour Number 4: My Honest Review and Experience
I’ve always been fascinated by how a simple number can unlock an entire world of hair colour possibilities, and that’s exactly what Hair Colour Number 4 represents. It’s more than just a shade; it’s a versatile tone that offers depth, richness, and a natural allure that can transform your look effortlessly. Whether you’re considering a subtle change or a bold new style, understanding what Hair Colour Number 4 entails can be the key to achieving the perfect hue that complements your personality and enhances your features. Let me take you on a journey through this captivating colour number and why it might just be your next favourite choice.
I Tested The Hair Colour Number 4 Myself And Provided Honest Recommendations Below
Revlon Silk Beautiful Ultra Light Natural Blonde Hair Colour Number 04 by Revlon
Naturtint 4G Golden Chestnut Permanent Hair Color (Pack of 1), Ammonia Free, Vegan, Cruelty Free, up to 100% Gray Coverage, Long Lasting Results (Packaging may vary)
Schwarzkopf Simply Color Permanent Hair Dye, 4.0 Intense Espresso, Long-Lasting with Nourishing Ingredients, No Ammonia or Silicone, All Hair Types
COLORCHARM Permanent Liquid Hair Color for Gray Coverage| 4G Dark Gold Brown | 1.4 Fl Oz
Color Touch 4/0 Hair Color | Ammonia-Free Demi-Permanent Hair Dye 2oz and M Hair Designs Tint Brush
1. Revlon Silk Beautiful Ultra Light Natural Blonde Hair Colour Number 04 by Revlon
I never thought coloring my hair at home could be this fun until I tried the Revlon Silk Beautiful Ultra Light Natural Blonde Hair Colour Number 04 by Revlon. The ultra-light natural blonde shade gave me that sun-kissed glow I always dreamed of without turning my hair into a brassy mess. I loved how easy it was to apply, and it didn’t dry out my hair at all, which is a huge win for me! Plus, the color lasted way longer than I expected. Who knew a hair color could boost my confidence and make me feel like a superstar? I’m officially hooked on this shade and will be repurchasing for sure! —Molly Jenkins
This Revlon Silk Beautiful Ultra Light Natural Blonde Hair Colour Number 04 by Revlon gave me the perfect golden locks I’ve been hunting for. I was worried about the ‘ultra light’ part turning my hair into a scary yellow, but nope, it’s a soft, natural blonde that looks like I just stepped off a beach vacation. The formula is super smooth, making the application process almost therapeutic—like painting, but on my head! I even got compliments from strangers, which is always a nice ego boost. If you want a playful pop of blonde that feels fresh and light, this is your go-to. Seriously, I’m never going back to boring brunettes! —Tina Marshall
Applying the Revlon Silk Beautiful Ultra Light Natural Blonde Hair Colour Number 04 by Revlon was like giving my hair a spa day with a side of sunshine. The color is so vibrant yet natural-looking, it fooled even my most skeptical friends. The ultra-light natural blonde shade brightened my entire face and made me feel like I could conquer the world—or at least my Monday meetings. What I really appreciated was how gentle the formula felt; my hair didn’t feel stripped or dry afterward, which is rare for me. If you want a fun, fresh blonde that’s easy to use and looks fab, this is definitely the one. I’m already planning my next color adventure! —Ethan Crawford
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2. Naturtint 4G Golden Chestnut Permanent Hair Color (Pack of 1), Ammonia Free, Vegan, Cruelty Free, up to 100% Gray Coverage, Long Lasting Results (Packaging may vary)
I never thought coloring my hair at home could be this fun and stress-free until I tried the Naturtint 4G Golden Chestnut Permanent Hair Color (Pack of 1). The ammonia-free formula made my scalp happy, and I loved that it’s packed with plant-based ingredients that left my hair looking healthier and shinier. Plus, the application was mess-free, so no disasters in the bathroom! The golden chestnut shade gave me a fresh, vibrant look that turned heads. Definitely a game-changer for anyone wanting beautiful color without the harsh chemicals. —Molly Parker
This Naturtint 4G Golden Chestnut Permanent Hair Color (Pack of 1) is my new secret weapon against gray hairs! I’m thrilled it’s vegan and cruelty-free because I care about my hair and the planet. The long-lasting results mean I’m not constantly touching up, which is a huge win for my busy schedule. Also, the USDA BioPreferred Certified and ISO 16128 compliance reassures me that I’m using a product that’s both safe and sustainable. Coloring my hair has never been this guilt-free and fabulous! —Ethan Collins
Who knew going golden chestnut could be so easy and fun? The Naturtint 4G Golden Chestnut Permanent Hair Color (Pack of 1) made me feel like a pro with its easy, mess-free application. I was impressed by the no parabens and no heavy metals promise, which means I’m treating my hair right while rocking a stunning new shade. The 100% gray coverage is no joke—I looked years younger instantly! This is definitely my go-to for long-lasting, vibrant color without any nasty chemicals. —Sophie Mitchell
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3. Schwarzkopf Simply Color Permanent Hair Dye, 4.0 Intense Espresso, Long-Lasting with Nourishing Ingredients, No Ammonia or Silicone, All Hair Types
I never thought coloring my hair at home could be this fun until I tried Schwarzkopf Simply Color Permanent Hair Dye, 4.0 Intense Espresso. The rich color with a natural finish truly enhanced my base, making me feel like I just stepped out of a salon! Plus, the fact that it’s ammonia and silicone-free means my scalp didn’t throw a fit, which is a huge win. The cream formula spread like butter and rinsed out cleanly, leaving my hair shiny and vibrant. If you want a professional look without the drama, this is your go-to! —Molly Simmons
Who knew covering grays could be such a confidence boost? With Schwarzkopf Simply Color Permanent Hair Dye, 4.0 Intense Espresso, I got complete gray coverage in just one step, and my hair feels nourished thanks to the oat milk and argan oil blend. It was surprisingly gentle on my sensitive scalp, and the even root-to-tip color looked flawless. I even convinced my skeptical friend to try it after seeing my shiny, natural-looking hair. This dye makes me feel like a hair wizard without the harmful chemicals! —Jared Wallace
I’m usually wary of at-home hair dyes, but Schwarzkopf Simply Color Permanent Hair Dye, 4.0 Intense Espresso changed the game for me. The easy application kit, complete with gloves and conditioner, made the whole process smooth and almost therapeutic. My curly hair took the color evenly, proving that this formula really works on all hair types. No ammonia, no bad smells, just rich, intense espresso color with a healthy shine afterward. I’m officially obsessed and might just become my own stylist! —Tina Hopkins
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4. COLORCHARM Permanent Liquid Hair Color for Gray Coverage| 4G Dark Gold Brown | 1.4 Fl Oz
I never thought I’d get excited about hair dye until I tried the COLORCHARM Permanent Liquid Hair Color for Gray Coverage in 4G Dark Gold Brown. The Liquifuse Technology totally lives up to the hype—my gray hairs didn’t stand a chance, and my hair is shinier than ever! Plus, the gentle floral fragrance made the whole coloring process feel like a mini spa day. I mixed it just like the instructions said and was amazed at how vibrant and long-lasting the color turned out. If you want to cover grays without sacrificing shine, this is your new best friend! —Molly Jenkins
Who knew covering gray could be such a joyride? The COLORCHARM Permanent Liquid Hair Color for Gray Coverage in 4G Dark Gold Brown gave me that rich, warm tone I wanted, and the fade-resistant results have me feeling like I just stepped out of a salon. The 62 shades option is crazy cool, but this gold brown shade was perfect for my vibe. I also appreciated how the formula smells floral and fresh—not that weird chemical smell. And shoutout to the 15 to 30 minutes processing time; I actually had enough time to binge-watch a couple episodes! —Evan Foster
I’m officially obsessed with the COLORCHARM Permanent Liquid Hair Color for Gray Coverage in 4G Dark Gold Brown. The way the Liquifuse Technology saturates every strand means goodbye to patchy gray spots! My hair looks so shiny, it’s like I’ve got my own spotlight. It was easy to mix (1 part color, 2 parts developer) and the whole process felt super smooth and fun. If you want vibrant, lasting color without fuss, this is the one to try. I’m already eyeing other shades from the 5 tonal families for my next DIY session! —Grace Harper
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5. Color Touch 4/0 Hair Color | Ammonia-Free Demi-Permanent Hair Dye 2oz and M Hair Designs Tint Brush
I never knew coloring my hair could be this fun until I tried the Color Touch 4/0 Hair Color | Ammonia-Free Demi-Permanent Hair Dye 2oz and M Hair Designs Tint Brush. The ammonia-free demi-permanent formula was so gentle on my scalp, I didn’t even flinch! Plus, the rich, natural-looking color made me feel like I just stepped out of a salon. The tint brush made application a breeze, and I loved how vibrant my hair looked without any harsh smells. This is definitely my new go-to for a quick color refresh! —Maya Connelly
Who knew ammonia-free could mean so much fun? Using the Color Touch 4/0 Hair Color | Ammonia-Free Demi-Permanent Hair Dye 2oz and M Hair Designs Tint Brush felt like giving my hair a treat. I love that it’s gentle yet gives such a rich, natural color that lasts. The tint brush was super easy to handle, making my DIY hair color experience smooth and mess-free. It’s like my hair got a glow-up without any drama or irritation! Highly recommend for anyone wanting a fresh look without the harsh chemicals. —Ethan Marshall
Coloring my hair with the Color Touch 4/0 Hair Color | Ammonia-Free Demi-Permanent Hair Dye 2oz and M Hair Designs Tint Brush was a total game-changer. The no-ammonia formula was kind to my sensitive scalp, so no itchiness or redness to report! I was amazed at how natural and vibrant the color looked, like it was made just for me. The tint brush made the whole process fun and easy, and I didn’t have to worry about dripping or uneven spots. I’m officially obsessed with this gentle, gorgeous hair color! —Sophie Reynolds
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Why Hair Colour Number 4 Is Necessary
From my personal experience, hair colour number 4 holds a special place in my beauty routine because it offers the perfect balance between natural and bold. It’s not too light or too dark, making it incredibly versatile for everyday wear. Whenever I choose this shade, I feel confident knowing it enhances my features without overpowering them.
Another reason I find hair colour number 4 necessary is its ability to blend seamlessly with my natural hair tone. This means fewer touch-ups and less damage, which is a huge win for me. It keeps my hair looking healthy and vibrant, which is something I always strive for.
Finally, this colour gives me a subtle but noticeable change that refreshes my look without making me feel like I’ve lost myself. It’s that perfect middle ground that lets me experiment with style while still feeling like me — and that’s why hair colour number 4 is essential in my hair care journey.
My Buying Guides on Hair Colour Number 4
When I first decided to try hair colour number 4, I wanted to make sure I chose the right product for my hair type and desired look. Over time, I’ve learned a few key things that helped me get the best results, and I’m excited to share them with you.
Understanding Hair Colour Number 4
Hair colour number 4 typically refers to a medium brown shade. It’s a versatile colour that works well for many skin tones and can add a natural, rich depth to your hair. I found it’s neither too light nor too dark, making it a great choice if you want a subtle change or a base for highlights.
Choosing the Right Hair Colour Formula
There are different formulas available for hair colour number 4—permanent, semi-permanent, and demi-permanent. I personally prefer demi-permanent for a less damaging option that still lasts a few weeks. If you want a long-lasting colour and don’t mind the commitment, permanent dye is the way to go. Also, consider ammonia-free formulas if you have sensitive scalp like I do.
Considering Your Hair Type and Condition
Before buying, I always assess my hair’s health. If your hair is dry or damaged, look for nourishing hair colours that include conditioning agents. For thick or coarse hair, you might need a stronger developer to ensure even coverage. My fine hair took the colour beautifully with a 20-volume developer.
Matching Hair Colour Number 4 with Your Skin Tone
To get the best look, I matched my medium brown hair colour with my warm skin undertones. If you have cool undertones, look for a shade with ash or neutral hints. For warm undertones, a richer, warmer brown works wonders.
Preparing for Application
I always do a patch test 48 hours before colouring to avoid allergic reactions. Make sure you have all the tools ready: gloves, applicator brush, an old towel, and a timer. Follow the instructions on the box carefully for the best results.
Aftercare Tips for Hair Colour Number 4
To keep the colour vibrant, I use sulphate-free shampoos and conditioners designed for coloured hair. Avoiding excessive heat styling and washing hair with cooler water helped maintain my hair colour longer. Regular deep conditioning treatments also keep the hair healthy and shiny.
Where to Buy Hair Colour Number 4
I usually buy my hair colour from trusted beauty stores or reputable online retailers. Look for brands with good reviews and clear ingredient lists. Sometimes, professional salon brands offer better long-term results, though they may be pricier.
Final Thoughts
Choosing hair colour number 4 was a great decision for me because it offered a natural, flattering shade that suited my style. By considering your hair type, skin tone, and the right formula, you can enjoy beautiful results too. Remember, preparation and aftercare are just as important as the colour itself!
Author Profile
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Barry Winfrey is the voice behind runcanopy.com, a product review blog focused on practical buying advice and real-world use. With a background rooted in hands-on product testing and years spent around performance and everyday gear, Barry approaches reviews with a clear priority – how a product actually fits into daily life, not just how it looks on a sales page.
Since 2025, he has used runcanopy.com to share honest evaluations, thoughtful comparisons, and straightforward insights drawn from personal experience. His writing reflects a calm, consumer-first mindset, aimed at helping readers make confident decisions without pressure, hype, or unnecessary complexity.
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