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Moumoujus

TRANEXAMIC ACID.

Valuable CAS 1197-18-8 / ASTRINGENT, SKIN CONDITIONING

Tranexamic Acid (TXA) is a synthetic derivative of the amino acid lysine, recognized for its precision in addressing various skin concerns. It effectively diminishes hyperpigmentation, dark spots, and melasma while also exhibiting potent anti-inflammatory properties.

Summary

skin brightening soothing reduces hyperpigmentation prevents dark spots reduces melasma anti-inflammatory strengthens skin barrier

Science

Mechanism of Action

TXA operates by inhibiting the enzyme plasmin, a key mediator in both melanin production and inflammatory responses within the skin. By blocking the plasminogen/plasmin system, it prevents the interaction between melanocytes and keratinocytes, consequently reducing pigment formation. It further mitigates inflammation by decreasing the production of inflammatory mediators like arachidonic acid and prostaglandin, which are known melanocyte stimulators. Additionally, TXA may inhibit PAR-2 activation, reduce tyrosinase activity, and is hypothesized to minimize dermal vasculature in melasma.

Research

Clinical Evidence

High confidence
Effective range 2–5%
Optimal

2%

Key findings

  1. 01 Clinical studies demonstrate that topical concentrations between 2% and 5% effectively reduce hyperpigmentation, prevent dark spots, and mitigate melasma.
  2. 02 Within this range, a 3% concentration has been shown to improve visible signs of rosacea and strengthen the skin barrier with just two weeks of topical treatment.
  3. 03 Concentrations exceeding 5% do not offer enhanced benefits for hyperpigmentation and carry an increased risk of irritation.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
2%
Red flag below
1.9%

While Tranexamic Acid is generally recognized for its efficacy, formulations containing less than 2% may not deliver the clinically observed benefits for hyperpigmentation, inflammation, or rosacea, potentially serving as a 'dusting' percentage for marketing purposes rather than true therapeutic effect.

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

Tranexamic Acid is highly water-soluble, with optimal efficacy and stability observed in formulations within a pH range of 5.0 to 7.0. It should be incorporated into the water phase of a formulation at temperatures below 50 degrees Celsius to prevent potential degradation.

Conflicts

  • Sugars (potential for discoloration)

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Low

Topical Tranexamic Acid is generally well-tolerated across all skin types, including sensitive and acne-prone skin. However, concentrations above 5% may increase the risk of irritation, dryness, or flakiness, especially during initial use. While the FDA monitors adverse events for cosmetic ingredients, its topical use is not subject to the same pre-market approval as systemic (oral/injectable) medical applications. Patch testing is recommended, and caution should be exercised in individuals with active conditions like eczema, severe acne, or psoriasis, as it could potentially exacerbate them.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Tranexamic Acid is a valuable active ingredient, highly effective in concentrations between 2% and 5% for reducing hyperpigmentation, preventing dark spots and melasma, and soothing inflammation, making it suitable for a wide range of skin types.

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