Melasma Not Going Away? Refractory Melasma Treated by Faculty Physicians at the Institute of Dermatology

Have you treated your melasma several times without it clearing? It may be refractory melasma, meaning melasma that does not respond to hydroquinone or standard laser treatment. Refractory does not mean untreatable. It means the condition needs to be fully re-evaluated and treated with a more systematic plan. This article explains why melasma does not clear and the step-by-step approach to treatment.

Why does melasma not clear? 5 main reasons

• The melasma type was not assessed: Epidermal, dermal and mixed melasma are treated differently. If the type is not identified first, the wrong treatment may be chosen.

• Oral medication was not used when needed: In some cases oral tranexamic acid (250 mg twice a day for 3-6 months, under a doctor's supervision) is needed as well.

• Sun protection was not enough: Sunlight is the most important trigger of melasma. If sun protection is not sufficient, melasma will keep coming back. Use a tinted sunscreen with SPF 50+ PA++++.

• Hormonal factors: Birth control pills or certain hormones can make melasma worse.

• The wrong type of laser: Choosing an unsuitable type or energy of laser may leave melasma unimproved or make it worse.

A systematic approach to treating refractory melasma

Treating refractory melasma requires a step-by-step plan adjusted to how each person responds, led by a specialist dermatologist:

• Step 1, diagnosis: Examine with a dermoscope and Wood's lamp to clearly identify the melasma type before planning treatment.

• Step 2, main topical treatment: Triple combination cream (hydroquinone 4% + tretinoin 0.05% + fluocinolone), used continuously for about 8-12 weeks.

• Step 3, oral medication: Oral tranexamic acid 250 mg twice a day, for people with no contraindications (such as a history of blood clots). A medical history must be checked first.

• Step 4, additional option: Cysteamine cream 5% is the next topical option for people who respond poorly to hydroquinone.

• Step 5, laser: Low-fluence Pico Laser combined with Q-switched Nd:YAG, given as a course about 4-6 weeks apart.

• Step 6, ongoing care: Continue care with SPF 50 sunscreen together with vitamin C and niacinamide to help prevent melasma from returning.

Frequently asked questions

Why has my melasma not cleared after several treatments? Most often because the melasma type was not diagnosed correctly, since epidermal, dermal and mixed melasma need different approaches. Other common causes are not using oral medication when needed, inconsistent sun protection, hormonal triggers, or the wrong type of laser.

Is oral tranexamic acid safe? It is safe for people with no history of blood clots (thromboembolism), and a doctor must take your history and assess you before prescribing it. In most patients, 250 mg twice a day for 3-6 months can lighten melasma by about 50-60%.

If hydroquinone does not work, what are the alternatives? There are other options, such as cysteamine cream 5%, azelaic acid 20%, kojic acid 4% or topical tranexamic acid 3%. If that is still not enough, oral medication may be needed together with chemical peels and laser, under a doctor's supervision.

Can refractory melasma be cured completely? Refractory melasma usually does not go away permanently, but it can be controlled and lightened considerably with correct, continuous treatment. Sun protection and regular follow-up with your doctor are key.

Treating refractory melasma requires a specialist dermatologist who assesses the melasma type and closely adjusts the treatment plan. Consult a specialist dermatologist at Siam Dermatology, call +66 61 448 7000 or LINE @siamderm

Written by Dr. Patara Voravutinon, Dermatologist · Last reviewed July 16, 2026