This brightening serum is formulated around Tranexamic Acid and Kojic Acid to fade the look of dark spots and brighten dull-looking skin.
This brightening treatment is formulated around Lactic Acid and Niacinamide to fade the look of dark spots and refine skin texture.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningIsopentyldiol
HumectantTranexamic Acid
AstringentPropanediol
SolventCitric Acid
BufferingKojic Acid
AntioxidantNiacinamide
SmoothingHydroxyacetophenone
AntioxidantIsododecane
EmollientPolyacrylate Crosspolymer-6
Emulsion StabilisingGlycyrrhiza Glabra Root Extract
BleachingPanthenol
Skin ConditioningGlycerin
HumectantXanthan Gum
EmulsifyingTremella Fuciformis Sporocarp Extract
AntioxidantPhenoxyethanol
PreservativeEthylhexylglycerin
Skin ConditioningBetaine
HumectantSodium Hyaluronate
HumectantSodium Phytate
ChelatingPotassium Sorbate
PreservativeTocopherol
AntioxidantWater, Isopentyldiol, Tranexamic Acid, Propanediol, Citric Acid, Kojic Acid, Niacinamide, Hydroxyacetophenone, Isododecane, Polyacrylate Crosspolymer-6, Glycyrrhiza Glabra Root Extract, Panthenol, Glycerin, Xanthan Gum, Tremella Fuciformis Sporocarp Extract, Phenoxyethanol, Ethylhexylglycerin, Betaine, Sodium Hyaluronate, Sodium Phytate, Potassium Sorbate, Tocopherol
Water
Skin ConditioningIsopentyldiol
HumectantLactic Acid
BufferingNiacinamide
SmoothingMandelic Acid
AntimicrobialTranexamic Acid
Astringent1,2-Hexanediol
Skin ConditioningSodium Pyruvate
Skin ConditioningSodium Hydroxide
BufferingAdenosine
Skin ConditioningCitric Acid
BufferingTaurine
BufferingCarnosine
Skin ConditioningSodium PCA
HumectantMannitol
HumectantPentylene Glycol
Skin ConditioningArginine
MaskingHydrolyzed Hyaluronic Acid
HumectantSodium Benzoate
MaskingBenzoic Acid
MaskingGlycine
BufferingMagnesium Sulfate
Nicotinamide Adenine Dinucleotide
Skin ConditioningErgothioneine
AntioxidantWater, Isopentyldiol, Lactic Acid, Niacinamide, Mandelic Acid, Tranexamic Acid, 1,2-Hexanediol, Sodium Pyruvate, Sodium Hydroxide, Adenosine, Citric Acid, Taurine, Carnosine, Sodium PCA, Mannitol, Pentylene Glycol, Arginine, Hydrolyzed Hyaluronic Acid, Sodium Benzoate, Benzoic Acid, Glycine, Magnesium Sulfate, Nicotinamide Adenine Dinucleotide, Ergothioneine
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.
Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.
Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.
In skincare formulas, citric acid can:
While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.
Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.
Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.
However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.
Learn more about Citric AcidIsopentyldiol is a synthetic solvent, humectant, and emollient.
Humectants have the ability to attract and hold water while emollients create a thin film to prevent water from evaporating. This combination keeps your skin and hair soft and hydrated. Plus, isopentyldiol does not leave a sticky feeling behind.
As a surfactant, isopentyldiol is a hydrotrope. Hydrotropes help surfactants (cleansing agents) dissolve into water.
According to the manufacturer, using this ingredient with sorbitol boosts skin hydration and helps close cuticles of damaged hair.
This ingredient is water-soluble.
Learn more about IsopentyldiolNiacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamideTranexamic Acid (TXA) is a synthetic lysine derivative that is becoming one of the most exciting brightening ingredients in skincare.
Originally used in medicine as an anti-hemorrhagic agent, its skin brightening potential was discovered by accident; patients taking it orally started noticing their melasma was fading.
Unlike most brighteners that target tyrosinase (the enzyme that synthesizes melanin), TXA works further upstream. It basically blocks your cells from receiving the signal to produce pigment.
This makes it one of the rare actives that works on three pathways at once:
This makes it effective for treating melasma, post-inflammatory hyperpigmentation (PIH), and sun-induced dark spots.
The most effective cosmetic concentration sits between 2-5% and going higher doesn't boost results.
Side effects are generally mild; occasional irritation, flaking, or dryness have been reported at the start of use. Overall, this ingredient is pretty well tolerated, even by sensitive skin types.
Another perk of this ingredient is that it does not cause photosensitivity, so it's safe to use in the AM and PM.
"Does it actually penetrate?" is the part that gets argued about online and the honest answer from research + clinical trials at this time is "yes, but not easily."
TXA is a small molecule that loves water and carries both a positive and negative charge at the same time. Skin's outer layer is oily so a water-loving molecule like this has a hard time getting through it. Liu et al. 2021 showed that it doesn't really stick around well in the deeper layer where pigment-making cells actually live.
A 2025 paper puts it simply: penetration is poor and it depends heavily on how the product is formulated (Winn et al., J Cosmet Dermatol).
But "poor" isn't "none" and the research is fairly clear that topical TXA does something. A 2026 review that pooled results from multiple studies found it helped with moderate melasma but it didn't outperform hydroquinone. Some individual studies at 3% and 5% went head to head with hydroquinone and help up well.
So the fair takeaway is that it works, it's just slower and fussier about formulation than other actives (how the serum is built matters a lot).
There's real evidence here and it's not just clinic marketing. Reviews of microneedling plus TXA report less pigmentation, less melanin, and less redness (Zhang et al., Chinese Journal of Plastic and Reconstructive Surgery, 2024).
The most useful study compared 42 patients getting microneedling plus TXA against microneedling on its own; the group that got the acid saw much bigger improvement. This suggests the acid is pulling its weight and the needling isn't doing all the work.
Just two things worth flagging here:
Oral TXA also works well for melasma and gets used in clinics. However, it is a systemic drug with clotting-related risks and needs a prescription. Injections into the skin have also been studied with good results.
Neither is something a cosmetic product can do, but they help explain why so much attention goes into getting the topical version right.
Learn more about Tranexamic AcidWater. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!
Learn more about Water