Short answer: melasma is a chronic pigment disorder causing brown-gray patches usually on the face. UV exposure, hormonal shifts (pregnancy, oral contraceptives), genetics, and visible light all drive it. Topical prescriptions can fade pigment, but triggers must be controlled or melasma returns.
Melasma is often labeled a cosmetic concern, but it is a distinct dermatologic condition with real recurrence rates. Understanding causes separates realistic treatment expectations from telehealth marketing that promises permanent clearance from a cream alone.
What Melasma Looks Like
Melasma presents as symmetric hyperpigmented macules and patches on sun-exposed facial areas — cheeks, forehead, upper lip, and chin common.[1] Wood's lamp and clinical exam help distinguish epidermal vs. dermal depth, which affects treatment response. Post-inflammatory hyperpigmentation and drug-induced pigment can mimic melasma — diagnosis matters before months on hydroquinone.
Ultraviolet and Visible Light
UV radiation stimulates melanocyte activity and is the most modifiable trigger.[1] Visible light (including high-energy visible blue light) also contributes, especially in skin of color.[2] This is why broad-spectrum SPF plus iron-oxide tinted protection is emphasized in melasma protocols — sunscreen alone without adequate visible-light protection may be insufficient for some patients.
Hormonal and Genetic Factors
Melasma is nicknamed the "mask of pregnancy" because estrogen and progesterone sensitivity upregulate melanogenesis in predisposed individuals.[2] Oral contraceptives and hormone therapy can trigger or worsen melasma. Family history strongly predicts risk — genetics set the canvas; UV and hormones paint on it.
Maintenance reality: even successful fading requires ongoing sun protection and often maintenance topicals — melasma is managed, not cured.[1]
Other Triggers and Mimics
Heat, infrared exposure, fragrances, and irritating cosmetics can flare pigment in sensitive patients. Medications, autoimmune conditions, and lichen planus pigmentosus belong in differential diagnosis.[1] A telehealth photo may not capture all mimics — persistent or atypical pigment warrants in-person dermatology.
How Prescription Treatment Fits
First-line therapy combines sun protection, topical lightening agents (hydroquinone, azelaic acid, cysteamine, tranexamic acid in some protocols), and often tretinoin to enhance penetration.[3] FDA-approved Tri-Luma combines fluocinolone, hydroquinone, and tretinoin for short-term use.[4] Telehealth melasma formulas are usually compounded — not FDA-approved finished products — and require prescriber oversight plus trigger control.
Bottom Line
Melasma is multiply determined: genetics load the gun; UV and hormones pull the trigger. Any prescription program that skips rigorous photoprotection education is incomplete. Compare providers on whether they address recurrence and maintenance — not just initial fading.
Sources
- Melasma — American Academy of Dermatology aad.org
- Melasma: A Clinical and Epidemiological Review — Anais Brasileiros de Dermatologia / PubMed pubmed.ncbi.nlm.nih.gov
- Hydroquinone — StatPearls ncbi.nlm.nih.gov
- Tri-Luma — Prescribing Information — U.S. Food and Drug Administration accessdata.fda.gov
Frequently Asked Questions
Does melasma go away on its own?
Postpartum melasma sometimes improves as hormones normalize, but many cases persist without treatment and sun protection.[1]
Can I treat melasma while pregnant?
Many standard agents (retinoids, hydroquinone) are avoided in pregnancy. Discuss pregnancy-safe options and strict sun protection with a clinician.[3]
Will a compounded cream cure melasma permanently?
No — without ongoing trigger control, pigment typically returns. Topicals manage melanin production; they do not remove underlying susceptibility.[1]