Cos De BAHA (TN) Tranexamic Serum

Cos De BAHA (TN) Tranexamic Serum

Cos De BAHA (TN) Tranexamic Serum is a gentle, affordable serum with tranexamic acid and niacinamide that brightens skin and fades hyperpigmentation over time.

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Rankings by Sentiment Analysis

Reddit Rank
#1
Total Upvotes
1851

Editorial Summary: This serum's a fave for fading dark spots and melasma, gentle on sensitive skin, and pretty affordable. Sticky texture's a bit annoying, and results take time. Niacinamide in it can irritate if you double up. Worth a try if you're patient and want a budget-friendly brightener.

Pros

  • Effective for fading post-inflammatory hyperpigmentation (PIH) and melasma
  • Gentle on sensitive skin with minimal irritation reported
  • Affordable price with good value, long-lasting bottles
  • Lightweight texture that absorbs well, especially when applied on damp skin
  • Versatile use for face, neck, hands, and redness reduction

Cons

  • Sticky texture that can be uncomfortable if layered or applied on dry skin
  • Contains 5% niacinamide, which may cause irritation if combined with other niacinamide products
  • Slow results requiring consistent, long-term use
  • Some users experienced breakouts or dryness, especially sensitive or oily skin
  • Limited availability and inconsistent pricing in some regions

Methodology: Analyzed 100+ Reddit quotes from skincare-focused subreddits including AsianBeauty, KoreanBeauty, and SkincareAddiction between March 2020 and June 2026, synthesizing user experiences on efficacy, texture, compatibility, and value.

Asked by Redditors

How long does it take to see results?
Most users notice improvements in hyperpigmentation and redness after 2-3 months of consistent use.
Is this serum suitable for sensitive skin?
Yes, many users with sensitive skin reported no irritation, but those sensitive to niacinamide should patch test.
Can I use it with other actives like tretinoin or vitamin C?
Yes, it's generally compatible and often paired with tretinoin and vitamin C for enhanced brightening.
How should I apply it to avoid stickiness?
Apply on damp skin to reduce sticky feeling and allow it to fully absorb before layering other products.
Is it effective for both PIH and PIE?
It is more effective for PIH and melasma; results on post-inflammatory erythema (PIE) are less consistent.

Reddit Reviews:

Calculated by the the number of posts or comments that have an opinion on this product

Positive
68
Neutral
62
Negative
13

Cos De Baha is working well for me right now. It has Tranexamic Acid and Niacinamide!!

u/Training-Weird-6195Sentiment: likely positive Upvotes: 94
Currently Showing 10 Reviews