What Is Tranexamic Acid? The Melasma Answer
Tranexamic acid is the underrated ingredient that fades stubborn hyperpigmentation. Here's how it works and the best products.
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Tranexamic acid is a synthetic amino acid that blocks UV-induced melanin production, making it one of the most effective ingredients for melasma and stubborn hyperpigmentation. Originally a blood-thinning drug, dermatologists use topical and oral forms for pigment treatment.
The ingredient that works on pigmentation when nothing else does.
How tranexamic acid works
Tranexamic acid inhibits plasminogen activator, a key enzyme in the pigment-production cascade triggered by UV exposure. This prevents melanin formation at the source, unlike vitamin C (which fades already-made pigment) or retinoid (which accelerates cell turnover).
Tranexamic acid vs other brighteners:
- Tranexamic: prevents pigment formation (UV-triggered)
- Vitamin C: fades existing pigment
- Retinoid: accelerates cell turnover
- Azelaic: inhibits tyrosinase
- Hydroquinone: most aggressive (prescription-strength)
Best results come from stacking mechanisms.
Top tranexamic acid products
Naturium
Tranexamic Topical Acid 5%
5% tranexamic acid at a budget price.
Best for: Daily pigment control
SkinMedica
Lytera 2.0 Pigment Correcting Serum
Tranexamic + multiple pigment-blocking actives.
Best for: Melasma, stubborn hyperpigmentation
Best for
- Melasma (hormonal pigmentation)
- Post-inflammatory hyperpigmentation that won’t fade
- Sun damage pigmentation
- People who tolerate vitamin C but still have stubborn pigment
- Pregnancy-safe (topical; confirm with OB)
Frequently asked
Tranexamic vs hydroquinone? +
Hydroquinone is stronger but has usage limits (3-4 months). Tranexamic is gentler, can be used long-term.
How long until melasma fades? +
8-12 weeks for visible improvement. Melasma is chronic, maintenance required indefinitely.
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