Tranexamic Acid 10 Serum , 1 fl oz (30 ml) Should You Add Tranexamic Acid to Your Brightening Routine? The Skinimalist This 5% Tranexamic Acid serum is made to target dark spots, uneven tone and post acne marks without irritating your skin With Niacinamide, Glutathione and Adenosine, it helps brighten, smooth and visibly even Dive deep into the science of skincare with this ingredient highlight: Tranexamic Acid This powerhouse ingredient is here to brighten, even out skin tone, and tackle hyperpigmentation like a pro!