B-Bomb 10% Niacinamide Serum — Reddit Reviews
Updated October 7, 2026
10% niacinamide and zinc for oil control; can backfire with orange-peel texture.
What the community says
A 10% niacinamide serum that Redditors keep in the oil-control bucket and use in AM or PM routines. Fans call it a staple and the best niacinamide serum they know. High-niacinamide skin can get oilier and pick up orange-peel texture.
What this means for you
Backed by 3 threads from r/SkincareAddiction, r/30PlusSkinCare and 1 more.
Read the threads ↓What people love
- 10% niacinamide for oil-control
- Staple serum in AM or PM routines
- Zinc PCA + sarcosine keep the formula lean
Watch out for
- High niacinamide can trigger more oiliness
- Orange-peel texture is a real complaint
- Pore claims are mixed at best
Product details
Skin Type
Key Ingredients
Skin type data limited
Where to buy
What the science says
Acne
Some evidence
Niacinamide: 6 studies tested it on its own. See all 17 studies
Both ingredients for acne
Niacinamide Some evidence
- 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
Studied at 4–10%this product: 10%
Zinc Not proven yet
Few or mixed studies. This claim isn't established.
4 studies tested it on its own. See all 16 studies
- The results were split, so there is no clear answer yet
- Some studies found zinc helped acne when put on the skin
- Used with clindamycin, zinc worked about as well as clindamycin alone
- Used with erythromycin, zinc did not clear acne better than erythromycin alone
- In one study, zinc helped but worked less well than tea lotion
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
Studied at 2–10%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
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 9 mentions across 3 threads
Geek & Gorgeous B-Bomb 10% Niacinamide Serum on Reddit, in one place — 3 threads from r/SkincareAddiction, r/30PlusSkinCare and 1 more, summarized.
“I started with the nø serum but in march I started using the geek and gorgeous bbomb serum instead bcs of its higher concentration.”
Cautionary
“But it did nothing for my pores, right now they seem larger and dirtier and more clogged than EVER”
Cautionary
“The G&G B-Bomb is a great product, but for many people, myself included, high concentrations of Niacinamide actually cause more oiliness and orange peel texture.”
Cautionary
“Geek and gorgeous can cover you on all of that basically.”
Mentioned
“https://geekandgorgeous.com/products/b-bomb”
Mentioned
“Thankfully those are easy to replace!”
Mentioned
“B-Bomb is the BEST niacinamide serum I know”
Positive
“so highly recommended”
Positive
