Kojic Acid vs Tranexamic Acid for Dark Spots

Kojic acid and tranexamic acid show up in almost every dark spot serum sold in Pakistan. They are not the same thing. This guide explains what each does, how they differ, and when using both makes sense.

Key takeaways

Tranexamic acid has small trials behind it: 3% topical tranexamic acid was about as effective as 4% hydroquinone for melasma in small studies.
For kojic acid we have not summarised a specific study, so we make no research claim; it is used to help slow melanin production and can irritate sensitive skin.
They are not rivals: some serums combine them, and the right choice depends on your type of dark mark and your tolerance.
Whichever you choose, daily sunscreen matters more than the ingredient.

What is the difference between kojic acid and tranexamic acid?

Kojic acid is derived from fungi and slows the enzyme (tyrosinase) skin uses to make pigment. Tranexamic acid works differently: it is studied for calming the signals that trigger extra pigment after sun exposure or inflammation. Both are used to help fade the look of dark spots; neither is a medical treatment.

How do they compare side by side?

	Kojic acid	Tranexamic acid
How it works	Slows pigment production at the enzyme level	Interrupts pigment-triggering signals in skin
Usual strength	1 to 3%	2 to 5%
Best known for	Sun spots, uneven tone	Post-acne marks, stubborn patches
Possible downside	Can irritate or cause contact reactions in some skin	Usually well tolerated; mild dryness is possible
Speed	Weeks of regular use	Weeks of regular use

Which one should you pick for dark spots?

If your marks are mostly from sun, kojic acid is a common choice. If they are leftover marks from breakouts or you have patches that return, tranexamic acid is often what people look for. Because they act at different points, many formulas combine them. Whichever you choose, sunscreen decides whether the spots come back. Our guide on why Pakistani skin gets dark spots explains why.

Can you use kojic acid and tranexamic acid together?

Yes, and they appear together in many serums. Our Brightening & Anti-Aging Serum (Rs 2,500) lists 3% tranexamic acid, 3% kojic acid, alpha arbutin and AHAs (glycolic and lactic acid). Because that is several actives, begin a few nights a week and watch for dryness or stinging.

How do you use a dark spot serum safely?

Cleanse and pat dry.
Apply a thin layer at night to the whole face or the spots.
Moisturize to protect your skin barrier.
Use sunscreen every morning. AHAs can increase sun sensitivity, and sun is what darkens spots.
Judge after 8 to 12 weeks, not days.

Is a serum enough, or should you buy a set?

A serum treats; a moisturizer keeps skin comfortable while it does. That is why we offer Set C (brightening serum plus moisturizer, Rs 4,499). Delivery is a flat Rs 250: 1 to 3 working days in Karachi, 5 to 7 elsewhere in Pakistan.

See what customers say on our customer reviews page.

How do you choose between them?

Your situation	Often leans towards	Why
Symmetrical patches that look like melasma	See a dermatologist; tranexamic acid has the melasma trials	Diagnosis first; trials were small
Brown marks after pimples	Either, with sunscreen and a gentle routine	Irritation can darken marks, so tolerance matters
Very sensitive skin	A low frequency of either; patch test first	Kojic acid can irritate
You want a combined formula	A serum that includes both, such as our Brightening Serum	Fewer steps, but more actives to tolerate

What mistakes do people make?

Using both in separate products on the same night.
Skipping sunscreen.
Expecting results in two weeks; judge after 8 to 12.
Picking pimples, which creates new marks.

How do you use the Chelure serum?

The Brightening & Anti-Aging Serum combines 3% tranexamic acid and 3% kojic acid with AHAs and alpha arbutin. Use 3 to 4 drops at night, follow with a moisturizer, and do not use it on the same night as the Acne Serum or the Night Cream. Results vary. See how to choose a serum for dark spots.

What does a study of a combined serum show?

In a 12-week clinical study of Brazilian women with Fitzpatrick skin types I to IV, a serum containing 3% tranexamic acid, 1% kojic acid and 5% niacinamide was assessed for melasma, post-inflammatory hyperpigmentation and hyperpigmentation. The authors reported significant improvement in the appearance of these conditions from week 2 through week 12, and a significant fall in melanin index by week 12 compared with baseline and control. It tested one specific formula, which differs from ours (our serum has 3% kojic acid and no niacinamide), so it supports the idea that these ingredients can work together but does not prove results for any other product.

Frequently asked questions

Which works faster?

Neither is instant. Expect weeks of consistent use; results vary by skin and by how well you avoid the sun.

Can I use it with niacinamide or retinol?

Use one new active at a time. Avoid combining acids with retinol on the same night.

Is it safe in pregnancy?

Ask your doctor before using any active ingredient if you are pregnant or breastfeeding.

Can I use kojic acid and tranexamic acid together?

Some serums combine them. Introduce any new product slowly and stop if irritation appears.

Which is gentler?

Tolerance differs by person. Kojic acid is known to irritate some sensitive skin, so patch test either one.

Sources

Review of tranexamic acid for melasma. PMC. PMC6715124
Sofen B, Prado G, Emer J. Melasma and post inflammatory hyperpigmentation: management update and expert opinion. Skin Therapy Lett, 2016 (PubMed 27224897).
Desai S, Ayres E, Bak H, et al. Effect of a tranexamic acid, kojic acid, and niacinamide containing serum on facial dyschromia: a clinical evaluation. J Drugs Dermatol, 2019;18(5):454-459 (PubMed 31141852).

A gentle reminder

Skincare helps the look and feel of your skin; it does not treat medical conditions. Patch test any new product behind the ear or on the inner arm first, and introduce one new active at a time. See our FAQ for more, or build your own routine.