I’ve been some version of “just brown” my entire life. Not a deliberate color choice, just whatever my hair did naturally, which was a flat, slightly mousy brown that never photographed particularly well and looked almost black under bad lighting. I never thought much about changing it until a friend came back from her colorist with what she called chestnut, and I genuinely didn’t recognize her for a second in a dim restaurant because her hair had this warm, glowing quality it never had before. I asked her what shade it was three separate times over dinner because I kept forgetting, and by the end of the night I’d already texted my own colorist asking for an appointment.
That was almost two years ago, and chestnut has been my color ever since, minus one brief and regrettable attempt to go lighter that I switched back from within two months. If you’ve been noticing this shade everywhere lately, or you’re tired of your own flat brown the way I was, here’s what actually makes chestnut different, who it works on, and what I wish someone had told me before my first appointment.
What Makes a Color “Chestnut,” Specifically
Chestnut sits in a pretty specific lane within brown hair colors, and it took my colorist explaining it with actual chestnuts on her phone screen for me to really get it. It’s a medium-to-deep brown with warm reddish undertones, distinct from a chocolate brown, which leans cooler and more neutral, and distinct from auburn, which has enough red in it to read as a red shade rather than a brown one.
The easiest way I’ve heard it described is that chestnut is what brown hair looks like when it’s caught the last hour of golden hour sunlight. There’s warmth and a subtle reddish glow, but it’s still unmistakably a brown, not a red. That balance is exactly why it’s become such a popular request lately. It reads as natural rather than “dyed,” while still having enough depth and richness that it doesn’t look flat or one-dimensional the way a plain, ashy brown sometimes can.
Why It’s Having a Moment Right Now
Part of what’s driving the shift toward chestnut is a broader move away from the cooler, ashier browns and blondes that dominated for a while. Ash tones can look striking, but they can also read as a little flat or even slightly gray under certain lighting, especially as people age or if their skin has warmer undertones to begin with. Chestnut does the opposite. It adds warmth back into the equation without tipping into full red or copper territory, which makes it feel more wearable for people who want a change but aren’t ready to commit to a bold red.
There’s also a maintenance angle that I didn’t fully appreciate until I lived with it myself. Warm brown tones like chestnut tend to grow out more gracefully than high-contrast colors. Since it’s close to a lot of natural brown bases, the regrowth line is softer and less jarring than what you’d get going from, say, black to platinum.
Does Chestnut Suit Everyone?
This is the question I get asked most when people notice my hair, and the honest answer is that it suits most people, but not identically, and the undertone matters more than most people realize going in.
Warm skin undertones — those with golden, peachy, or olive undertones — tend to have the easiest time with chestnut because the warmth in the hair color echoes the warmth already in their skin. This was my situation, and it’s part of why the color looked so immediately “right” on me compared to my old flat brown.
Cool skin undertones, meaning pink or blue undertones, can absolutely still wear chestnut, but it sometimes needs slight adjusting. My colorist mentioned that for cooler undertones, she’ll often pull the shade slightly less red and keep it closer to a deeper, richer brown with just a whisper of warmth rather than a fully pronounced reddish chestnut, so it doesn’t clash or make the skin look sallow by contrast.
Neutral undertones genuinely can go either direction and tend to have the most flexibility, which if you’re neutral, is honestly a nice position to be in when picking any hair color, not just this one.
As for eye color, I’ve seen chestnut look incredible on hazel eyes, where the warmth in the hair brings out gold and green flecks that get lost under cooler hair colors. It’s also a classic, flattering pairing with brown eyes, and even looks striking against blue or green eyes because the warm-cool contrast draws attention to the eye color rather than competing with it.
Chestnut on Different Starting Hair Colors
If you’re naturally dark brown or black, getting to chestnut usually requires some lightening, since you need to lift the base enough for the warm red-brown tones to actually show up rather than getting swallowed by very dark natural pigment. This was closer to my situation, and my appointment took a bit longer than a simple gloss or single-process color because of that lifting step.
If you’re naturally a lighter or medium brown already, chestnut is often a much simpler appointment, sometimes achievable with a demi-permanent gloss or single-process color rather than a full lightening and toning process. Less time in the chair, less potential damage, and often a more affordable appointment overall.
If you’re currently blonde, going to chestnut means depositing a lot of pigment onto hair that’s likely been lightened before, and your colorist will want to assess porosity and previous color history carefully, since over-porous hair can grab pigment unevenly and end up patchy or darker than intended in some sections.
If you’re currently red or auburn, chestnut is usually one of the easier transitions, since you’re working within a similar warm family and mostly adjusting the balance between brown and red rather than fighting your existing tone entirely.
Getting the Shade Right at the Salon
I made the mistake on my very first chestnut appointment of just saying “I want chestnut hair” and trusting that was specific enough. It mostly worked out, but in hindsight there was a lot of room for miscommunication that I got lucky avoiding. Here’s what I’d actually recommend saying instead:
Bring a photo, but be specific about what part of the photo you’re referencing — is it the depth (how dark or light), the warmth (how much red versus brown), or the overall glow you’re seeing in certain lighting?
Ask your colorist directly whether they’d recommend a demi-permanent gloss, a semi-permanent option, or a full permanent color, since this affects both how long it lasts and how it grows out. I didn’t know these were different options until my second appointment, and the demi-permanent version my colorist eventually recommended for touch-ups has been far gentler on my hair than the initial full-color process.
Mention your skin undertone if you know it, or ask your colorist to help you figure it out before deciding how warm or how deep to go. This single conversation is what saved my second appointment from looking too red against my skin, which had been my one real complaint after the first time.
Maintaining Chestnut Hair
Warm brown tones fade differently than cool ones, and honestly differently than I expected going in. Rather than turning brassy the way blonde or lightened hair does, chestnut tends to fade toward a duller, flatter brown as the red-toned pigments break down faster than the base brown underneath. It’s a less dramatic fade than going from icy blonde to yellow, but it does mean your hair can start looking a little lifeless a few weeks before you’d necessarily think it’s time for a touch-up.
A color-safe, sulfate-free shampoo has made a genuinely noticeable difference for me in how long the vibrancy lasts. I switched after my first appointment and could tell within a few weeks that the color was holding better than it had with my regular shampoo.
Weekly deep conditioning, especially if any lightening was involved in achieving your chestnut, keeps the hair from feeling dry or brittle, which in turn keeps the color looking richer, since dry, damaged hair reflects light poorly and can make even a great color look dull.
A gloss or toning treatment every six to eight weeks, even between full color appointments, refreshes the warmth without redoing the whole process. This has become my actual routine — full color maybe twice a year, gloss touch-ups in between.
Heat protectant before styling matters more with color-treated hair generally, but I’ve noticed it specifically affects how quickly the red tones fade if I skip it, since heat seems to break down the warmer pigments faster than the cooler base tones.
Common Mistakes to Avoid
Going too red without meaning to is probably the most common issue I’ve seen friends run into after asking for chestnut. If your colorist leans too far into the red end without checking in, you can end up somewhere closer to auburn than the warm brown you actually wanted. Speaking up during the process, even mid-appointment, is completely normal and expected.
Skipping a strand test if you have previous color history is a mistake I made once and regretted. Hair that’s been colored before can react unpredictably to a new color, and a quick strand test can catch issues like uneven absorption before it happens to your entire head.
Assuming it’s a “no-maintenance” natural-looking color is another common misconception. Chestnut looks natural, but it’s still processed color that fades and needs touch-ups like any other shade, just with a softer, less obvious regrowth line than high-contrast options.
Frequently Asked Questions
Is chestnut the same as auburn? No, though they’re often confused. Chestnut is fundamentally a brown shade with warm undertones, while auburn has enough red pigment to be classified as a red shade with brown undertones. Side by side, auburn reads noticeably more red.
Will chestnut hair color wash out my skin if I have a very fair complexion? Not typically, though the depth matters. Very fair skin often pairs better with a slightly lighter or softer chestnut rather than the deepest, most saturated version, since a very dark, intensely warm shade can sometimes create too much contrast against pale skin.
How often do I need to touch up chestnut hair color? Full color touch-ups are generally needed every eight to twelve weeks depending on your natural regrowth rate, though gloss treatments in between, every six to eight weeks, can extend the vibrancy without a full reapplication.
Can I go from chestnut back to my natural color easily? It depends on how much lightening was involved to achieve the chestnut in the first place. If minimal lightening was needed, growing it out or doing a gentle color removal is fairly straightforward. If significant lightening was involved, going back to a much darker natural shade may take a couple of sessions to avoid an uneven or patchy result.
Does chestnut hair color work well with highlights? Yes, and it’s actually a popular combination. Subtle caramel or golden highlights woven through a chestnut base add dimension and catch the light in a way that a single flat color sometimes doesn’t, without straying from that same warm color family.
Final Thoughts
Two years in, chestnut is still the color I recommend most often when friends ask me about switching from a flat, natural brown to something with a little more depth and warmth. It’s forgiving to grow out, flattering across most undertones with small adjustments, and different enough from your natural color to actually feel like a change, without being so dramatic that it takes over every conversation you have for the next month. If you’ve been stuck on “just brown” the way I was, this is probably the easiest, lowest-risk color switch you can make.