Vitamin C Glow Serum — Reddit Reviews

• Acne

  Strong evidence

  Azelaic Acid: 22 studies tested it directly. See all 31 studies→

  What the studies found

  • Most studies found azelaic acid helped clear acne
  • It often cleared acne better than a placebo
  • It usually worked about as well as tretinoin
  • It sometimes worked less well than benzoyl peroxide-based treatment
  • Side effects were usually local and moderate, with fewer local side effects than tretinoin in one trial

  Studied at 5–20% · this product: 2%

• Rosacea

  Strong evidence

  Azelaic Acid: 15 studies tested it directly. See all 17 studies→

  What the studies found

  • Most studies found it helped with rosacea more than a placebo or some other treatments
  • It often reduced bumps and redness from rosacea
  • It worked about as well as metronidazole in some studies, and better in others
  • It did not seem to help visible blood vessels
  • Reported side effects were mainly mild to moderate

  Studied at 15–20% · this product: 2%

• Hyperpigmentation

  Some evidence

  Vitamin C: 9 studies tested it directly. See all 19 studies→

  Both ingredients for hyperpigmentation

  Vitamin C · Some evidence

  • Most studies found vitamin C helped fade dark patches, especially melasma
  • It often worked better than a placebo when put on the skin for melasma
  • Used with microneedling or peels, it often improved dark patches more
  • Some studies found it worked about as well as other dark-spot treatments, not better
  • The side effects were usually mild and brief

  Studied at 3–30% · this product: 2%

  Azelaic Acid · Some evidence

  9 studies tested it directly. See all 12 studies→

  • Most studies found it helped fade dark spots or patches, especially melasma
  • It often lightened melasma better than a placebo
  • It worked about as well as hydroquinone in some studies, and better in others
  • Results were mixed for other pigment concerns, with no benefit seen for some sun spots
  • The most common side effects were irritation, burning and stinging

  Studied at 15–20% · this product: 2%

• Anti-Aging

  Some evidence

  Vitamin C: 4 studies tested it directly. See all 12 studies→

  What the studies found

  • All 4 studies that tested it directly found it helped with signs of aging
  • It improved the look and texture of sun-damaged skin more than a placebo
  • It helped smooth wrinkles, roughness, crow’s-feet, and uneven skin tone
  • It did not clearly beat a placebo for how much water the skin held
  • No irritation or sensitivity was reported in one study

  Studied at 5–10% · this product: 2%

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