Discoloration Correcting Serum — Reddit Reviews
Updated October 3, 2026
Niacinamide serum for fading dark spots; takes patience.
What the community says
A niacinamide-heavy discoloration serum with glycerin and propanediol for easy layering. Redditors use it for PIH and acne marks, and studies back niacinamide for acne; slower fades and uneven results are the catch.
What this means for you
Backed by 28 threads from r/SkincareAddiction, r/scacjdiscussion and 7 more.
Read the threads ↓What people love
- Niacinamide for post-acne marks
- Layers easily and plays well with most routines
- Fragrance-free, low-drama formula
Watch out for
- Dark spots can take months to budge
- A lot of people saw nothing
- Can sting or double irritation on already raw skin
Product details
Values
Product Traits
Key Ingredients
Where to buy
What the science says vs. what Reddit says
Acne
Some evidence
Niacinamide: 6 studies tested it on its own. See all 17 studies
On Reddit: Niacinamide calms oily and cystic skin while visibly lightening dark spots within weeks without irritation. 3 mentions
Hyperpigmentation
Some evidence
Niacinamide: 5 studies tested it on its own. See all 24 studies
On Reddit: Discoloration serum with niacinamide fades acne scars slowly with consistent morning and night use. 29 mentions
What the studies found
- All of these studies found niacinamide helped fade dark spots or patches
- Niacinamide 5% faded dark spots more than a placebo in studies of sun-damaged skin and dark patches
- Used with salicylic acid peels, niacinamide improved dark patches more than peels alone
- A niacinamide mix faded dark spots better than niacinamide alone in one study
- One study found the fading effect reversed after niacinamide was stopped
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 73 mentions across 28 threads
Good Molecules Discoloration Correcting Serum on Reddit, in one place — 28 threads from r/SkincareAddiction, r/scacjdiscussion and 7 more, summarized.
“GM Discoloration Correcting Serum”
Positive
“Definitely GM Discoloration Correcting Serum, I've purchased recently my fifth bottle to give it another round this year.”
Positive
“That's the routine that got me the 2nd photo results”
Positive
“Good molecules discoloration correcting serum”
Positive
“Now I'm just working on lightening my hyperpigmentation.”
Positive
“Current skincare routine:”
Positive
“This is the ONLY brightening serum I’ve tried that lightened my acne spots in a matter of 2-3 months rather than 1.5-2 years.”
Positive
“Then I went back to the Good Molecules, boom 2 weeks and the spots were basically gone.”
Positive
“For me it clears up my skin and keeps it clean and hydrated. It's even good around my eyes ... if I wash my face too much ... I just add some drops of the discoloration correcting serum and it calms right down!”
Positive
“My current skin care routine is the panoxal benzoyl 10%, good molecules discoloration serum, and differin gel.”
Positive
“I have hyperpigmentation scars on my back and use Good Molecules discoloration correcting serum to fade them.”
Positive
“It’s helped a lot.”
Positive
“I’m sure there are a lot of other ones that would work for that, too.”
Positive
“As the initial bump went down, I bought good molecules discoloration correcting serum for the spot left.”
Positive
“It did take a while to fade”
Positive
“If I stare, I can still see it but no one else would even notice.”
Positive
Dupes & Alternatives
Anua
Azelaic Acid Hyaluron Redness Soothing Serum
Better for Hyperpigmentation
4 shared traits
676 mentions
