Dark Spot Correcting Glow Serum — Reddit Reviews

• Acne

  Some evidence

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

  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: 5%

• Hyperpigmentation

  Some evidence

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

  On Reddit: Niacinamide 5% concentration targets post-acne red and purple marks for gradual fading over weeks. 21 mentions

  What the studies found

  • 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: 5%

• Dehydration

  Some evidence

  Hyaluronic Acid: 2 studies tested it on its own. See all 3 studies→

  What the studies found

  • No side effects were reported in one study

• 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: 5%

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