Medicube TXA Niacinamide 15 Serum Dupes & Cheaper Alternatives
From 21 Reddit threads · Updated October 30, 2026
5% tranexamic acid plus niacinamide targets dark spots; sticky, mixed payoff. Here's what Redditors reach for instead.
The short answer
Best Overall AlternativeTranexamic acid plus niacinamide for pigment-focused routines · $6.50 · 10 ml
Best Cheaper AlternativeLight gel texture that absorbs quickly without greasiness · $1.98 · 5 ml vs $18.90 for the original
Same Active: Niacinamide10% niacinamide plus 4% tranexamic acid for stubborn dark marks · $18.70 · 30 ml
#1
Best Overall Alternative
- Size: 10 ml
- Price per ml: $0.65/ml (original $0.63/ml)
The why
This multi-active brightening serum layers easily and suits dry or combination skin chasing acne marks and uneven tone. Redditors report fading for some; studies found topical niacinamide’s acne results uncertain. People with reactive, breakout-prone skin report irritation and breakouts.
One minus
Not a true vitamin C serum; the vitamin C content is viewed as too weak
Good forSensitive Skin, Dry Skin
Both recommended for Hyperpigmentation.
The original, at a glance
- Why people love it
- 5% tranexamic acid for dark-spot routines
- Price
- $18.90 · 29.9 ml · $0.63/ml
#2
Best Cheaper Alternative
Dark Spot Correcting Glow Serum
Axis-Y·Serum
See alternativesLight gel texture that absorbs quickly without greasiness
- Key actives: Niacinamide 5%
- Size: 5 ml
- Price per ml: $0.40/ml (original $0.63/ml)
The why
A lightweight 5% niacinamide serum for dark marks, uneven tone, and a quick glow. Reddit users describe fast absorption and occasional impressive fading, though others saw nothing after months or experienced worsening skin.
One minus
Does nothing for some users, even after four months
Both recommended for Hyperpigmentation.
“To treat the red/purple marks that remain for ages after you get rid of the initial pimples, i recommend the axis-y dark spot correcting serum!”
— Reddit, r/acne
#3
Same Active: Niacinamide
Niacinamide 10% + TXA 4% Serum
Anua·Serum
See alternatives10% niacinamide plus 4% tranexamic acid for stubborn dark marks
- Key actives: Niacinamide 10%, TXA 4%
- Size: 30 ml
- Price per ml: $0.62/ml (original $0.63/ml)
The why
A concentrated brightening serum pairing 10% niacinamide with 4% tranexamic acid, plus arbutin and hyaluronic acid. Redditors report faded pigmentation, while studies found topical niacinamide can improve acne; sensitive skin often finds this formula harsh.
One minus
Sticky, slow-absorbing finish that sits on skin
Both recommended for Hyperpigmentation.
“TXA serums like the one from Medicube or Anua can help with brown spots as well”
— Reddit, r/SkincareAddiction
#4
Best for Hyperpigmentation
- Key actives: L-ascorbic acid 15%, alpha tocopherol 1%
- Size: 30 ml
- Price per ml: $4.93/ml (original $0.63/ml)
The why
A 15% L-ascorbic acid serum paired with 1% tocopherol and 0.5% ferulic acid for morning antioxidant support and visible tone work. It suits experienced vitamin-C users chasing pigmentation and glow, but sensitive skin may sting and oxidized bottles turn orange.
One minus
Mind-bogglingly expensive for 30 mL
Good forDry Skin, Sensitive Skin
Both recommended for Hyperpigmentation.
“Changes: Added CE Ferulic + tretinoin + tinted SPF”
— Reddit, r/40plusskincare
Other alternatives worth a look
Gentler vitamin C derivative for reactive skin · 25 recs
Sensitive SkinLightweight
Multi-active pigment blend with tranexamic acid, niacinamide, and kojic acid dipalmitate · 56 recs
AcneMelasma
10% tranexamic acid for post-acne pigmentation · 44 recs
Oily SkinUnder Makeup
Centella, niacinamide, and tranexamic acid brightening blend · 18 recs
Combination SkinSensitive Skin
TXA-led glutathione brightening cocktail · 15 recs
Brightening
2% alpha-arbutin plus tranexamic acid · 14 recs
Dry SkinSensitive Skin
5% tranexamic acid + 5% niacinamide for PIH · 7 recs
Oily Skin
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