Final Up to date on July 19, 2026 by Giorgia Guazzarotti
Azelaic acid vs vitamin C: which one really works higher for fading darkish spots? Vitamin C is in all places in skincare, with its guarantees of brighter, extra glowing pores and skin, whereas azelaic acid is the dermatologists’ go-to for cussed marks that refuse to budge, particularly for delicate pores and skin or pregnant women. So which one do you have to select? The reality is, there isn’t a one-size-fits-all reply. The higher alternative is dependent upon what’s inflicting your pigmentation, how delicate your pores and skin is, and what outcomes you’re hoping to attain. On this information, we’ll break down the distinction between azelaic acid and vitamin C for hyperpigmentation, so you’ll be able to determine which ingredient makes essentially the most sense on your pores and skin.
Azelaic Acid VS Vitamin C At A Look
| AZELAIC ACID | VITAMIN C | |
|---|---|---|
| HOW IT WORKS | Tyrosinase inhibitor and calms irritation | Antioxidant that interrupts melanin manufacturing and neutralises free radical harm |
| SKIN CONCERNS | PIH after zits, melasma, rosacea-related redness | Solar-induced dullness, common uneven tone, antioxidant safety |
| EVIDENCE | Robust: a long time of scientific trials, some head-to-head towards hydroquinone | Reasonable: blended scientific outcomes on seen fading |
| SPEED | 8–12 weeks sometimes | 8–12 weeks, generally longer for seen spot fading |
| SKIN TYPES | All pores and skin sorts, together with acne-prone pores and skin and delicate pores and skin | Most pores and skin sorts, however formulation issues lots |
| SENSITIVE SKIN | Usually very nicely tolerated | Can sting, particularly L-ascorbic acid at increased concentrations |
| PREGNANCY | Thought of pregnancy-safe (all the time affirm along with your physician) | Usually thought of secure, however examine formulation along with your physician too |
| SIDE EFFECTS | Delicate tingling, occasional dryness | Stinging, redness, oxidation points if poorly formulated |
| CAN BE COMBINED? | Sure | Sure |
Why Hyperpigmentation Occurs
Melanin is the pigment that offers your pores and skin its color. It’s made by cells referred to as melanocytes, which use an enzyme referred to as tyrosinase to transform an amino acid (tyrosine) into melanin. Enjoyable truth: melanin can be your pores and skin’s defence mechanism towards UV rays. That’s why solar publicity makes pigmentation worse: UV gentle tells your melanocytes to ramp up manufacturing, mainly as a protecting response. The issue begins when this course of goes into overdrive in particular spots. That may occur due to:
- Solar harm: spending an excessive amount of time within the solar with out satisfactory safety. Whats up, solar spots!)
- Irritation: pimples, cuts or bag bites trigger post-inflammatory hyperpigmentation (PIH)
- Hormonal triggers: widespread particularly throughout teenager years or being pregnant (melasma is commonly referred to as “the masks of being pregnant”)
Various kinds of hyperpigmentation have totally different root causes, in order that they don’t all reply the identical method to the identical pores and skin substances. Melasma, as an example, is notoriously cussed and susceptible to coming again, as a result of it’s pushed by hormones and warmth as a lot as UV. PIH from zits is normally simpler as a result of as soon as the irritation is gone, the surplus pigment simply wants assist clearing. So what do you have to use?
Associated: How To Deal with The Darkish Spots Left Behind By Pimples
How Azelaic Acid Fades Hyperpigmentation
Azelaic acid (a dicarboxylic acid, for these of you into the science) is a naturally occurring acid: it’s present in grains (like wheat, rye and barley) and it’s additionally a byproduct of yeast naturally discovered in your pores and skin. It really works by inhibiting tyrosinase, the enzyme accountable for kicking off melanin manufacturing. Nevertheless it doesn’t simply block the enzyme throughout the board. It selectively targets hyperactive and irregular melanocytes with out affecting regular pigment cells. Because of this it targets darkish spots with out lightening different areas that don’t want lightening.
Azelaic acid additionally has actual anti-inflammatory properties, which makes it an amazing possibility for mild-to-moderate zits with moderate-to-severe post-inflammatory hyperpigmentation Azelaic acid additionally calms irritation, which issues lots for acne-related darkish marks. Darker pores and skin produces extra melanin in response to irritation, so breakouts usually tend to go away a darkish mark behind as a substitute of fading on their very own. Azelaic acid treats the irritation inflicting the mark and fades the mark itself, with out lightening the pores and skin round it. A 16-week examine on 15% azelaic acid gel confirmed this: it improved each the zits and the marks it left behind.
The proof for melasma particularly is powerful too. A well known double-blind examine evaluating 20% azelaic acid cream towards 4% hydroquinone cream, each used alongside a broad-spectrum sunscreen, ran for twenty-four weeks with 329 ladies and located azelaic acid produced good or glorious ends in 65% of instances, with no vital distinction between the 2 therapies in lowering lesion measurement and pigment depth. Most significantly, no instances of allergic sensitisation or ochronosis (blue patches of pores and skin generally seen with long-term hydroquinone use in darkish pores and skin) had been reported with azelaic acid. Supply:
How Vitamin C Fades Hyperpigmentation
Vitamin C works fully in a different way. Simply because it brightens pores and skin, it doesn’t imply I does the identical job as azelaic acid. It doesn’t. Vitamin C (or ascorbic acid) is one among skincare’s greatest antioxidants. Its major job is absorbing free radicals, the nasty buggers brought on by by UV rays and air pollution that break down pores and skin and velocity up darkish spots, advantageous strains, and indicators of ageing. Oh, and it performs a component in collagen manufacturing to maintain your pores and skin younger-looking. Nevertheless it does greater than that. Like azelaic acid, vitamin C additionally inhibits tyrosinase to cut back melanin manufacturing. It simply does it extra gently and slowly.
This twin motion (defending pores and skin from harm because of its antioxidant properties and slowing down new pigment) is why vitamin C reveals up in routines for anti-ageing, calming pores and skin, fading pigmentation, brightening, and solar safety, melasma included. A overview of 31 research discovered vitamin C is nice at stopping new pigmentation brought on by solar publicity. So consider it extra as prevention than a repair for spots you have already got – although it helps with each.
Fading present spots is the place the proof will get shakier. A 2023 overview checked out vitamin C for melasma and solar spots. Underneath lab measurements, pores and skin genuinely appeared lighter. However when actual sufferers rated their very own pores and skin, most research confirmed no actual distinction versus a placebo. Researchers suppose this may partly come all the way down to the very fact vitamin C can sting a bit, which can throw off how individuals decide their very own outcomes. Additionally they mentioned research most likely have to run longer to catch seen change.
FYI, not all Vitamin C is created equal. The pure type, L-Ascorbic Acid, is the powerhouse antioxidant greatest confirmed to work. However it could irritate pores and skin and goes again rapidly, so manufacturers are utilizing derivates telling you they work simply as nicely. They don’t. If you wish to fade darkish spots, you want the pure type for greatest outcomes. Interval.
Associated: Varieties Of Vitamin C Used In Skincare: Which One Is Finest?
Azelaic Acid VS Vitamin C: Which Works Higher For Completely different Kinds of Hyperpigmentation?
- Melasma: Azelaic Acid. In a single 24-week examine, 65% of ladies utilizing 20% azelaic acid noticed good or glorious outcomes, matching hydroquinone, the go-to prescription possibility. It’s additionally gentler on reactive, melasma-prone pores and skin and appropriate throughout being pregnant. Vitamin C helps defend towards the solar and warmth that set off melasma, however not often shifts it by itself.
- Put up-Inflammatory Hyperpigmentation (PIH): Azelaic acid, simply. It calms the irritation inflicting new marks whereas fading previous ones, and has gentle antibacterial motion too. Vitamin C can assist therapeutic pores and skin, nevertheless it’s not doing the heavy lifting right here.
- Solar Spots (Photo voltaic Lentigines): Vitamin C’s strongest space. Solar spots come from UV harm, so an ingredient that protects towards UV and slows melanin manufacturing is a pure match. Layered below sunscreen, it additionally helps stop loads of the harm within the first place.
- Normal Uneven Pores and skin Tone: Simply boring and flat quite than distinct darkish marks? Vitamin C wins right here. It brightens the entire complexion, not simply particular person spots, and offers you radiant pores and skin.
Which Ingredient Works Sooner?
Neither of those is an in a single day repair, and if anybody’s telling you it’s, they’re promoting you one thing. Realistically: Azelaic acid sometimes reveals seen change across the 8 to 12 week mark, generally sooner for inflammation-related redness, with continued enchancment over a number of months of constant use. Vitamin C timelines are comparable, roughly 8 to 12 weeks for noticeable brightening, although precise darkish spot fading (quite than common glow) can take longer. FYI, that you must give each of them a serving to hand. To see quick outcomes, you additionally have to:
- Be constant: when you use them solely from time to time, outcomes will take for much longer (duh!)
- Focus: whereas decrease concentrations work extra slowly, increased focus could irritate pores and skin and trigger irritation. The correct dosage is essential.
- Sunscreen: it doesn’t matter what you employ and the way fixed you might be with it, when you’re skipping day by day SPF, you’re simply inflating harm quicker than you’re treating it.
- How deep the pigmentation sits in your pores and skin: the deeper it’s (I’m you, Melasma), the longer it takes.
- Pores and skin kind: when you use one thing that’s too irritating on your pores and skin kind, you’ll trigger irritation and make darkish spots worse.
Which Is Higher For Delicate Pores and skin?
Azelaic acid. It’s one of many gentlest lively substances on the market, which is why dermatologists typically attain for it first with rosacea, delicate pores and skin, or throughout being pregnant. You may get gentle tingling while you apply it, nevertheless it settles quick and fades with use. With Vitamin C, issues are extra difficult. L-ascorbic acid is the best, but additionally the almost certainly to sting or irritate pores and skin, particularly in increased strengths. You can use extra steady types of vitamin C, however they merely don’t work as nicely. So that you may as nicely go immediately with azelaic acid. Mentioned that, all the time patch take a look at first. Simply in case.
Can You Use Azelaic Acid And Vitamin C Collectively?
Sure – you simply have to do it the best means. I all the time suggest my shoppers to make use of a Vitamin C serum within the morning, simply earlier than sunscreen, to spice up its solar safety and forestall loads of solar harm and darkish spots within the first place. Then, use an Azelaic Acid product each different evening earlier than moisturiser. In case you use retinol, use that on nights you don’t use retinol. All the time alternate days to keep away from overwhelming your pores and skin and inflicting irritation. And when you exfoliate, cease. Azelaic acid has gentle exfoliating properties, so that you don’t want a separate exfoliant in your skincare routine too. Which means no glycolic acid, no salicylic acid, no pure exfoliant, no scrub… Azelaic acid is sufficient.
Which Of These Powerhouse Components Ought to You Select?
Use azelaic acid if: your pigmentation adopted zits or any type of pores and skin irritation, you’re coping with melasma, your pores and skin is delicate or rosacea-prone, otherwise you need a therapy that’s secure throughout being pregnant (although you must all the time run this by your physician or midwife first, each being pregnant and state of affairs is totally different).
Use vitamin C if: you wish to brighten boring pores and skin whereas step by step fading pigmentation, your darkish spots are primarily sun-related, otherwise you need the added antioxidant safety towards future environmental harm on prime of pigment correction.
Use each if: you’re coping with cussed, long-standing hyperpigmentation that hasn’t budged with one ingredient alone and your pores and skin tolerates a number of lively substances with out freaking out.
The Finest Azelaic Acid Skincare Merchandise:
- Facetheory Blemicalm Azelaic Acid 15% Clarifying Serum (£26.00): Loaded with 15% Azelaic acid and colloidal oatmeal, it helps deal with zits, soothe irritations, and lighten darkish spots. Accessible at Facetheory
- Paula’s Selection 10% Azelaic Acid Booster ($36.00): It features a contact of Salicylic Acid to unclog pores too. Accessible at Cult Magnificence, Paula’s Selection, and SpaceNK
- The Peculiar Azelaic Acid Suspension 10% ($12.20): A easy, no-frills formulation that simply works with out breaking the financial institution. Accessible at Magnificence Bay, Cult Magnificence, The Peculiar, and Ulta
The Finest Vitamin C Serums:
- MaeLove Glow Booster ($27.95): The most cost effective Vitamin C serum on this record, it does all the things the others do, nevertheless it comprises a citrus extract that could be irritating for delicate pores and skin. Accessible at Maelove.
- Paula’s Selection C15 Booster ($46.75): It’s enriched with Hyaluronic Acid and glycerin to deeply hydrate pores and skin. Accessible at Cult Magnificence, Dermstore, Paula’s Selection, Sephora, and SpaceNK.
- Skinceuticals CE Ferulic ($169.00): The unique Vitamin C serum, it prices an arm and a leg, nevertheless it works wonders and delivers what it guarantees. Accessible at Dermstore and Skinceuticals.
The Backside Line
There isn’t a common winner right here. They’re each famous person substances. Azelaic acid wins for melasma, acne-related PIH, and delicate pores and skin. Vitamin C tends to shine extra for sun-induced pigmentation, common dullness, and as a day by day antioxidant protect that helps stop new harm from turning into new darkish spots down the road. Your best option is dependent upon what sort of hyperpigmentation you’re coping with, how delicate your pores and skin is, and what you’re really attempting to attain.
