Niacinamide 10% + TXA 4% Serum — Reddit Reviews

• Hyperpigmentation

  Strong evidence

  Tranexamic Acid: 16 studies tested it on its own. See all 21 studies→

  On Reddit: Tranexamic acid targets stubborn brown spots after pimples in combination with niacinamide and arbutin for evening skin tone. 37 mentions

  Both ingredients for hyperpigmentation

  Tranexamic Acid · Strong evidence

  Studied at 1–5% · this product: 4%

  Niacinamide · Some evidence

  5 studies tested it on its own. See all 20 studies→

  • All 5 studies that tested it on its own found it helped fade dark spots
  • On its own, it reduced facial darkening and made skin look lighter than a placebo
  • It also improved dark spots linked with sun damage in one clinical trial

  Studied at 2–10% · this product: 10%

• Acne

  Some evidence

  Niacinamide: 6 studies tested it on its own. See all 17 studies→

  On Reddit: Niacinamide leads users with oily T-zone and acne scars to reduce oil and dark spots while hydrating skin. 5 mentions

  What the studies found

  • Most studies found niacinamide helped acne
  • It often cleared acne about as well as clindamycin when put on the skin
  • Some studies found it helped reduce red, sore spots and pimples
  • Some evidence is still uncertain because some studies found no clear difference

  Studied at 4–10% · this product: 10%

• Skin Barrier

  Not proven yet

  Few or mixed studies. This claim isn't established.

  Niacinamide: 1 study tested it on its own. See all 17 studies→

  What the studies found

  • The one study that tested it on its own found it helped the skin barrier
  • It lowered water loss through the skin
  • It increased the thickness of the outer skin layer

  Studied at 4–5% · this product: 10%

Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.