Dark spots have an annoying habit of sticking around long after the thing that caused them is gone.
The breakout healed. You stopped picking. Summer ended six months ago. And yet... there it is.
That’s because hyperpigmentation isn't really a “stain” sitting on top of your skin. It’s the end result of your skin receiving a signal — inflammation, UV exposure, hormones, injury — and responding by producing more pigment.
Which means fading hyperpigmentation really requires two jobs: clearing the pigment you already have and stopping your skin from being told to make more of it.
So, here's the crash course on how to get rid of these suckers.
What Hyperpigmentation Really Is
Your skin contains specialized cells called melanocytes, whose job is to produce melanin.
Melanin itself is a good thing. It gives your skin its color and helps protect it from UV radiation.
The problem starts when certain melanocytes get the memo to produce more melanin than the surrounding skin.
That excess pigment gets packaged into tiny structures called melanosomes and transferred into neighboring skin cells. Voilà: a dark spot.
Also, a little PSA: yes, you can totally just call them "dark spots". For sake of ~science~ we're calling the whole lot "hyperpigmentation". Just know, the terms are interchangeable!
The Types of Hyperpigmentation
POST-INFLAMMATORY HYPERPIGMENTATION (PIH)
The brown, tan, or gray marks left behind after inflammation — especially acne, eczema, picking, irritation, burns, or other injuries.
SUN SPOTS
Areas of excess pigment associated with accumulated UV exposure. They're particularly common on the face, chest, shoulders, and hands.
MELASMA
Larger, often symmetrical patches of pigmentation most commonly appearing across the cheeks, forehead, upper lip, or jaw. Hormonal signaling, genetics, UV and even visible light can all play a role.
Different triggers still have the same basic result: your pigment-producing machinery becomes overactive and creates dark spots.
Maybe bananas need a new skincare routine... ☺
How Dark Spots Happen: The Biology
Here's how it all works inside your skin!
1. Inflammation tells skin to make pigment.
When skin becomes inflamed, the chemical signals involved in that inflammatory response can also stimulate melanocytes. The result is increased melanin production in the area.
That's why acne, eczema, irritation, picking, and even aggressive skincare can all leave PIH behind.
And it's why treating the inflammation itself matters just as much as applying something “brightening.”
2. UV exposure keeps the pigment factory running.
Melanin exists partly to protect skin from radiation, so when UV hits your skin it responds by trying to protect itself by creating pigment.
That makes daily sun protection one of the least exciting and most important parts of treating hyperpigmentation.
For some pigment disorders, particularly melasma, even visible (non-UV) light can matter and trigger the same functional response.
3. Hormones can change melanocyte activity.
Hormonal signaling is one reason pigmentation can appear or worsen during pregnancy or hormonal shifts. Enter: melasma!
And as we've discussed before: your skin isn't simply waiting around for hormonal instructions from the rest of your body. Skin is itself a hormonally active organ.
The takeaway isn't that every dark spot is “hormonal.”
It's that pigmentation is biological communication, not just discoloration. Increased hormonal activity means more possibility for new pigmentation.
Why Some Dark Spots Take Forever to Fade
The short version is because not all pigment is sitting at the same depth in your skin.
When the inflammation or trauma to the skin isn't as intense, the excess melanin remains primarily in the epidermis (your skin's upper layers). These layers shed constantly, and the spots can gradually disappear within days/weeks.
But significant inflammation can cause pigment to end up deeper in the dermis. That pigment is much slower to clear because it requires a full, uninterrupted cycle of skin renewal. That means, no significant inflammation, picking, or problems in that area for at least 28 days.
This is also why the temptation to absolutely obliterate a dark spot with acids, scrubs, peels and retinoids can spectacularly backfire.
A hyperpigmentation routine should increase healthy correction without repeatedly injuring the skin you're trying to correct. Otherwise, you end up playing pigmentation whack-a-mole!
How to Actually Fade Hyperpigmentation
The best approach hits the process from a few angles.
1. Calm the pigment signal
Treat the source of inflammation whenever possible — whether that's acne, irritation, eczema, picking, or an overly aggressive routine. And wear broad-spectrum sun protection daily.
Pro tip for stubborn melasma: a tinted sunscreen with iron oxides can provide additional protection against visible (non-UV) light.
2. Interrupt pigment production and transfer
Several topical ingredients can interfere with different parts of the pigmentation process.
✦ Niacinamide has been shown in human studies to reduce hyperpigmentation by interfering with the transfer of melanosomes from melanocytes into surrounding skin cells.
✦ Vitamin C helps combat oxidative stress and can interfere with pathways involved in excess pigmentation.
✦ Licorice Root Extract contains compounds that naturally inhibit tyrosinase, one of the key enzymes your skin uses to make melanin.
The important thing here is that they don't all do the same job.
3. Encourage healthy cell turnover
Once excess pigment exists inside epidermal skin cells, turnover helps gradually move those cells toward the surface.
Ingredients like lactic acid can support that process without requiring the scorch-the-earth approach of an aggressive peel.
Gentle + consistent wins here.
4. Calm inflammation and stabilize the barrier
Inflammation caused the problem in the first place. Creating more of it while trying to fix the problem is... less than ideal.
A strong skin barrier reduces unnecessary irritation and helps your skin tolerate corrective ingredients consistently enough to actually see results. Key ingredients here are DIM (our Heart to Heart Complex®) and probiotics.
Our Root Cause Approach to Dark Spots
Everything you've read above is exactly why we don't formulate hyperpigmentation products around one trendy “brightening” ingredient. Dark spots are too complicated!
Our Daily Vitamin Serum takes a multi-pathway approach with:
✦ Our Heart to Heart Complex®, powered by DIM, to support the inflammatory, hormonal and cellular environment surrounding the visible concern.
✦ Niacinamide to help reduce pigment transfer and even skin tone.
✦ Licorice Root Extract to target excess pigmentation while calming skin.
✦ Vitamin C for antioxidant and brightening support.
✦ Lactic Acid to gently support cell turnover.
In other words: it work on the spot while also working on why your skin keeps making spots.
If breakouts are the reason you keep getting new marks, our Clarify & Control Protocol tackles both sides of the cycle: the breakouts coming in and the evidence they're leaving behind.
FAQs
Is post-acne hyperpigmentation the same thing as an acne scar?
Nope!
If the spot is flat and simply a different color from the surrounding skin, you're generally dealing with post-inflammatory discoloration.
A true scar involves a change in the skin's structure — like an indentation or raised area.
Also worth noting: red or pink post-acne marks may be post-inflammatory erythema (PIE) rather than excess melanin.
How long does hyperpigmentation take to fade?
It depends heavily on the cause, pigment depth, skin tone, sun exposure and whether the original trigger is still happening.
Some topical brightening ingredients have produced measurable improvements within four to eight weeks, but stubborn PIH can take months to fully resolve.
Deeper pigment generally takes longer than superficial pigment.
Can hyperpigmentation disappear on its own?
Post-inflammatory hyperpigmentation often can — eventually — particularly if the inflammation that caused it has stopped.
But “eventually” can be a very long time.
Sun exposure and repeated inflammation can also continuously darken or replace the pigment you're naturally clearing.
Should I exfoliate dark spots?
Gently? Sure. Aggressively? Please no, do not declare war on your face.
Exfoliation can help remove pigmented surface cells, but irritation itself can trigger more PIH. More exfoliation is not automatically more correction!
What's the single most important thing I can do?
Stop creating new pigment while you're fading the old pigment.
That means controlling inflammation, protecting your skin from the sun, leaving your breakouts alone, and resisting the urge to throw twelve aggressive actives at one brown spot.
Your skin knows how to clear pigment. Your job is to stop repeatedly giving it reasons to make more.
______
We hope this made the mysterious world of dark spots significantly less mysterious :)
If you have questions about hyperpigmentation, our products, or which routine makes sense for your skin, send us a note at team@shoplamarue.com. We'd love to help!
References
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6524306/
Sharma D, Misba L, Khan AU. Antibiotics versus biofilm: an emerging battleground in microbial communities. Antimicrob Resist Infect Control. 2019 May 16;8:76. doi: 10.1186/s13756-019-0533-3. PMID: 31131107; PMCID: PMC6524306.
- https://pubmed.ncbi.nlm.nih.gov/35631553/
Golberg K, Markus V, Kagan BE, Barzanizan S, Yaniv K, Teralı K, Kramarsky-Winter E, Marks RS, Kushmaro A. Anti-Virulence Activity of 3,3'-Diindolylmethane (DIM): A Bioactive Cruciferous Phytochemical with Accelerated Wound Healing Benefits. Pharmaceutics. 2022 Apr 30;14(5):967. doi: 10.3390/pharmaceutics14050967. PMID: 35631553; PMCID: PMC9144697.
- https://pubmed.ncbi.nlm.nih.gov/35107361/
Kim YG, Lee JH, Park S, Lee J. The Anticancer Agent 3,3'-Diindolylmethane Inhibits Multispecies Biofilm Formation by Acne-Causing Bacteria and Candida albicans. Microbiol Spectr. 2022 Feb 23;10(1):e0205621. doi: 10.1128/spectrum.02056-21. Epub 2022 Feb 2. PMID: 35107361; PMCID: PMC8809333.
