Hydro Boost+ Niacinamide 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 it helped acne
  • It often cleared acne about as well as clindamycin
  • Some studies found it reduced red, sore spots
  • A large review found the overall evidence was still uncertain

• Hyperpigmentation

  Some evidence

  Niacinamide: 5 studies tested it on its own. See all 24 studies→

  What the studies found

  • All of these studies found it helped fade dark spots or patches
  • Niacinamide 5% faded dark spots more than a placebo in studies of facial sun damage and dark patches
  • It also helped when used with salicylic acid peels, improving how dark and widespread the patches were
  • Used with another ingredient, it faded dark spots less than the combination formula
  • One split-face trial found facial dark spots improved, but the fading did not last after stopping

• 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
  • Skin treated with niacinamide lost less water
  • The outer layer of skin became thicker

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