Tranexamic acid is a synthetic derivative of the amino acid lysine that inhibits plasminogen activation to plasmin. Topically, it is thought to reduce melanin synthesis by inhibiting plasminogen activator in keratinocytes, which in turn reduces the activity of tyrosinase. This mechanism helps to diminish hyperpigmentation and erythema, improving skin tone and reducing discoloration often associated with aging or sun damage.
Verdict
Effective for targeted skin hyperpigmentation, improving cosmetic appearance.
HEALTHSPAN IMPACT
Moderate
RISK LEVEL
Low
EVIDENCE GRADE
A
MONTHLY COST
$20 - $80
Protocol
- Apply a 2-5% tranexamic acid solution or cream to affected areas once or twice daily.
Flags
- Mild skin irritation, dryness, or redness can occur, especially initially.
- Effectiveness for hyperpigmentation may require consistent, long-term use.
- Systemic absorption is minimal but theoretical risk of hypercoagulability for large-area application.
- Should not be used on broken or irritated skin.