Journal · Formulation · 6 min
Why tranexamic acid works where hydroquinone rebounds.
Hydroquinone bleaches existing pigment. Tranexamic acid stops new pigment from being made. The second approach is the one that lasts.
The Biomedical Emporium® formulation desk
3 April 2026
Hydroquinone works quickly. Two to three months of use produces a visible reduction in pigment on most skin types. It also produces the pattern clinicians call rebound: when the treatment stops, the pigment often returns brighter than it left.
Tranexamic acid works slower and quieter. Twelve weeks in, the reduction is comparable. The difference shows up at week twenty, when the tranexamic-treated patient has not rebounded because the mechanism was interruption, not bleaching. The pigment-producing cells simply were not sent the memo to make more.
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