Tranexamic Acid for Skin: What It Is, How It Works & the Best K-Beauty Products

Posted by Skinsider Team on 3rd Jun 2025

What is Tranexamic Acid?

Originally developed to treat excessive bleeding, tranexamic acid is a synthetic derivative of the amino acid lysine. In the world of skincare, it’s become a go-to ingredient for tackling uneven skin tone and hyperpigmentation. By calming skin inflammation and interfering with pigment production, it helps reduce discolouration without the harshness of some traditional brightening agents.

What Does Tranexamic Acid Do for Skin?

Used consistently, it can visibly fade dark spots, melasma, sun damage and post-acne pigmentation. Unlike exfoliating acids, tranexamic acid doesn’t resurface the skin — instead, it targets pigment at its source, gently helping to restore clarity and brightness over time. It’s especially loved in Korean skincare for its ability to deliver results without irritation.

When and Why Should You Use It?

Whether you’re dealing with long-standing pigmentation or occasional flare-ups from sun exposure or breakouts, tranexamic acid fits easily into most routines. It’s well-suited for skin that's sensitive, acne-prone or experiencing redness. Many Korean formulas pair it with niacinamide, kojic acid or vitamin C to enhance its brightening effect and support the skin barrier.

How to Use a Tranexamic Acid Serum

Apply after cleansing and toning, usually once or twice a day depending on your skin’s needs. Follow with a moisturiser and broad-spectrum SPF if used in the morning. Products containing this ingredient are typically gentle enough for daily use, and they layer well with hydrating and calming serums.

A great option to start with is the APLB Tranexamic Acid Niacinamide Ampoule Serum – it combines tranexamic acid with niacinamide to help visibly reduce dark spots while calming and strengthening the skin.

How Long Does Tranexamic Acid Take to Work?

With regular use, most people start noticing a brighter, more even complexion within 4 to 8 weeks. Deeper pigmentation may take longer, especially if it's hormonal or long-standing. As always with skincare, consistency is key — and patience pays off.

Can I Use Tranexamic Acid with Retinol?

This ingredient pairs well with many popular actives. You can use it alongside niacinamide, vitamin C, and hyaluronic acid. When it comes to retinol, layering is possible — just be mindful of your skin’s tolerance and consider alternating usage or applying at different times of day.

Can I Use Tranexamic Acid in Spring and Summer?

Absolutely. Tranexamic acid is gentle enough to be used year-round, including during the warmer months. In spring and summer, when UV exposure increases and pigmentation tends to worsen, it can actually be especially helpful in preventing dark spots from becoming more pronounced. Just be sure to pair it with a broad-spectrum SPF every morning, as any brightening routine makes your skin more vulnerable to the sun. Lightweight serums like the APLB Tranexamic Acid Niacinamide Ampoule Serum are ideal for warmer weather, as they absorb quickly without leaving a greasy residue.

Top Korean Skincare Products with Tranexamic Acid:

Looking to try this powerhouse ingredient? These Korean formulas offer targeted, gentle brightening for all skin types:

APLB Tranexamic Acid Niacinamide Ampoule Serum – A fast-absorbing serum packed with brightening and calming ingredients, ideal for fading pigmentation without irritation.

APLB Tranexamic Acid Niacinamide Facial Cream – Lightweight but nourishing, this cream helps seal in active ingredients while supporting the skin barrier.