Melasma vs. Hyperpigmentation: A Doctor Explains if Tranexamic Acid Can Help, and Why Laser Treatment Can Be Counterproductive
Although melasma and sun spots may look similar, their treatments are entirely different. A doctor honestly answers questions such as why lasers can worsen melasma, whether tranexamic acid truly lightens it, and how to use hydroquinone.
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June 10, 2026
What's the difference between melasma and age spots? Can tranexamic acid cure it? A doctor explains why laser treatment can be counterproductive
A doctor answers all your questions.
"I thought it was a spot and had laser treatment, but it got worse." "I'm taking tranexamic acid, but is it really working?" "Does melasma disappear naturally?" "Can it be improved without laser?" This one article will answer all your questions about melasma.
Melasma is a pigmentary disorder common in women aged 30-50, caused by a combination of hormonal fluctuations and UV exposure. It has completely different causes and treatments than common age spots, and incorrect treatment (especially high-power laser) risks worsening it. In this article, a doctor from Mona Aoyama Clinic provides an honest explanation based on medical evidence.
- Online nationwide prescription for oral tranexamic acid and topical hydroquinone
- Placenta injections available for in-person treatment (Tokyo, Aoyama)
- Same-day prescription and same-day shipping (for payments made by 4 PM)
- 1. Melasma vs. Age Spots: How to Tell the Difference
- 2. Factors that Worsen Melasma and Why Summer Requires Caution
- 3. Why Laser Treatment Can Be Counterproductive for Melasma
- 4. Effects, Usage, and Duration of Oral Tranexamic Acid
- 5. How to Use Topical Hydroquinone
- 6. Our Clinic's Melasma Treatment Plan
- 7. Frequently Asked Questions
1. Melasma vs. Age Spots: How to Tell the Difference
| Comparison Item | Melasma | Age Spots (Senile Lentigines) |
|---|---|---|
| Cause | Hormonal fluctuations (estrogen) + UV-induced overactivity of melanocytes | Accumulated damage from UV radiation (UV-A and UV-B) |
| Prevalent Age | Women aged 30-50 (common during pregnancy or while on birth control pills) | From 30s onwards (increases with age). Affects both men and women |
| Appearance | Brownish discoloration spreading symmetrically on both cheeks. Blurred borders | One to several brown spots. Clear borders |
| Around the Eyes | Does not appear around the eyes (important characteristic) | Can appear around the eyes |
| Response to Friction | Worsens with friction (over-washing or massaging) | Relatively less affected by friction |
| Laser Treatment | Can worsen with conventional laser treatment | Picosecond laser and Q-switched laser are effective |
| Oral Treatment | Tranexamic acid is effective (covered by insurance) | Direct effect of oral medication is weak for general spots |
Self-Check: 5 Points to Determine if it's Melasma
- Appears symmetrically on both cheeks (if asymmetrical, likely an age spot)
- No pigmentation around the eyes (melasma does not appear around the eyes)
- Borders are blurred (age spots typically have relatively clear borders)
- Appeared or worsened during pregnancy, while on birth control pills, or during lactation
- Worsens after vigorous washing or massaging
2. Factors that Worsen Melasma and Why Summer Requires Caution
| Worsening Factor | Countermeasure |
|---|---|
| UV Radiation (Biggest Worsening Factor) | Use SPF50+ PA++++ sunscreen daily. Also use parasols and hats. |
| Friction (Washing, Massaging) | Wash gently, enveloping with foam. Do not rub with a towel. |
| Hormonal Fluctuations (Birth Control Pills, Pregnancy) | Consult a doctor if melasma worsens while on birth control pills. |
| Lack of Sleep, Stress | Affects hormone balance. Improving lifestyle habits is also important. |
⚠️ Summer is when UV radiation is strongest, and melasma is most likely to worsen during this season. Without sunscreen, the effects of oral and topical treatments are halved. Continuous treatment is crucial in summer.
3. Why Laser Treatment Can Be Counterproductive for Melasma
Melanocytes in melasma are highly sensitive. When they receive strong energy or heat stimulation, they perceive it as "danger" and instead produce a large amount of melanin. This mechanism of worsening is called "post-inflammatory hyperpigmentation."
| Type of Laser | Use for Melasma | Reason |
|---|---|---|
| Q-switched Laser (High Power) | ❌ Generally NOT recommended | Strong energy stimulates melanocytes → prone to worsening due to post-inflammatory hyperpigmentation |
| Picosecond Laser (High Power Mode) | ⚠️ Caution needed | Risk of worsening depending on power and settings |
| Low-Power Toning Laser | ✅ Acceptable with appropriate settings | Applies weak energy broadly. Reduces melanin without stimulating melanocytes |
Our clinic does not have laser equipment, so we offer melasma treatment starting with oral and topical medications. Balancing cost, risk, and convenience, trying oral and topical treatments for 3-6 months first is a reasonable choice.
4. Effects, Usage, and Duration of Oral Tranexamic Acid
Tranexamic acid is the only oral whitening medicine for which melasma is covered by insurance. By inhibiting the action of plasmin, a substance that activates melanocytes, it fundamentally suppresses melanin production.
| Item | Content |
|---|---|
| Standard Dosage | 250mg × 3 times a day (after meals) = 750mg per day |
| Time to See Effects | Noticeable changes within 1-3 months, clear improvement within 3-6 months |
| Effect on Age Spots | Almost no direct effect on common age spots (melasma-specific) |
| Side Effects | Gastrointestinal symptoms (rare). Risk of thrombosis (caution when combined with birth control pills) |
| When to Stop | Melasma tends to recur even after significant improvement. Consult a doctor about continuing at a low dose or maintenance therapy. |
💡 For those who haven't seen changes after 2 months: Check if you are using sunscreen daily. The effectiveness will be halved without UV protection. If there's no change in 3-4 months, a re-evaluation of the diagnosis may be necessary.
5. How to Use Topical Hydroquinone
Hydroquinone is a topical whitening agent that directly inhibits tyrosinase, an enzyme essential for melanin synthesis. Often called the "king of whitening," it can lead to clear improvement within 4-8 weeks.
- Apply pinpoint to areas of concern (spots/melasma) as a basic principle
- Apply a thin layer before sleep, and wash it off the next morning as a basic practice
- Start with a low concentration (4%), and if irritation is minimal, move to a higher concentration
- Thorough sunscreen use is essential during application, as sunlight can cause irritation
- Synergistic effects can be expected when combined with oral tranexamic acid
6. Our Clinic's Melasma Treatment Plan
| Treatment Method | Role | Our Clinic's Service |
|---|---|---|
| Oral Tranexamic Acid | Fundamentally inhibits melanin production. Clear improvement in 3-6 months | ✅ Online prescription available |
| Topical Hydroquinone | Directly inhibits tyrosinase. Effective in 4-8 weeks | ✅ Online prescription available |
| Oral Vitamin C | Antioxidant and supplementary melanin inhibition | ✅ Online prescription available |
| Placenta Injections | Antioxidant, whitening, and skin metabolism promotion. Supplemental treatment | ✅ In-person treatment (Aoyama) |
| Sunscreen (Daily) | Blocks UV rays, the biggest worsening factor | ✅ Over-the-counter products are fine |
- Start using sunscreen daily (immediately) Use SPF50+ PA++++ daily. Wash your face gently with foam.
- Start oral tranexamic acid + topical hydroquinone Online prescription, same-day shipping. Take oral medication 3 times a day after meals.
- Check for effects after 1-2 months "It feels a little lighter" is the first sign.
- If you want to enhance the effects, add placenta injections Please consult for in-person treatment (Aoyama).
7. Frequently Asked Questions
If you send photos via online consultation, we can make a rough determination. If you have symmetrical brown discoloration on both cheeks, avoiding the area around the eyes, it's likely melasma.
Melasma tends to recur if treatment is stopped even after improvement, so we will decide whether to continue long-term at a low dose or use maintenance therapy in consultation with your doctor. It becomes easier to maintain in combination with UV protection.
Individual assessment is necessary due to the risk of thrombosis. Please be sure to inform us during your online consultation if you are taking birth control pills.
Yes, it can be improved. By continuing oral tranexamic acid, topical hydroquinone, and UV protection for several months, post-inflammatory hyperpigmentation often resolves.
Clinic Hours and Access
| Clinic Name | Mona Aoyama Clinic |
| Consultation Format | Online Consultation (Nationwide) / In-Person Consultation (Tokyo, Aoyama) |
| Location | 3F D Building, 1-10-3 Minami Aoyama, Minato-ku, Tokyo 107-0062 |
| Nearest Station | 5-minute walk from Tokyo Metro "Aoyama-itchome Station" |
| Online Consultation | 24-hour reception · Same-day shipping available (for payments made by 4 PM) |
Consult Mona Aoyama Clinic for Melasma Treatment
You can start without laser treatment. Begin with a tranexamic acid prescription via online consultation.