Why the type of pigmentation matters

Melanin is the pigment that gives skin its color, which the beauty industry has found remarkably many ways to describe. When the skin produces too much melanin, patches can become darker; pregnancy and sun exposure can contribute.3

Melasma is a chronic condition influenced by hormones, sunlight and genetics. Pigment can sit in the epidermis, the upper skin layer, in the dermis, the deeper layer, or in both. Melasma is not simply the same problem as a dark mark left after a pimple: those marks often fade after their trigger stops, while melasma is more complex.4

Creams work on pigmentation in the upper skin layers. A doctor can examine the patches and sometimes use a Wood lamp examination to help assess the pigment's location. Deeper pigmentation helps explain why a cream can disappoint even when it is used correctly.1

Which creams help with melasma?

TreatmentWhat it offersWhat changes the choice
HydroquinoneReduces production of new melanin in the upper skin layer. Creams and lotions come in concentrations of 1% to 5%.Needs medical guidance and a review of response after three months.
Combination creamCombines hydroquinone, tretinoin and a corticosteroid to help lighten patches.The prescribed formula determines the directions; do not assemble the combination yourself.
Azelaic acidCan replace hydroquinone or be combined with hydroquinone, tretinoin or both.An option during pregnancy.
TretinoinA vitamin A derived medicine used with other ingredients in melasma creams.Can cause dryness, peeling and sun sensitivity; avoid during pregnancy.
156

Choose treatment by its active ingredient and directions, not by how many synonyms for "radiant" fit on the box, which leaves the packaging with less to contribute. Azelaic acid, glycolic acid, kojic acid, retinoids and vitamin C are also used in products for dark spots generally; that broader category is not interchangeable with a prescribed melasma combination.7

How do you use hydroquinone?

Use hydroquinone under a doctor's guidance. These are general directions for hydroquinone alone, not a substitute for the instructions on a prescription combination cream.1

  1. 1Test an area about 1 cm across. Wait 24 hours and check for redness or irritation.
  2. 2Apply a thin film only to the pigmented skin, initially once daily. Keep it away from the eyes and mouth.
  3. 3If there is no irritation after one week, application can increase to twice daily under your treatment plan.
  4. 4Wait 10 minutes before putting sunscreen or cosmetics over hydroquinone.
  5. 5Review the result after three months. Stop if there has been no benefit; maintenance sometimes uses twice weekly application.
5

Do not add other topical medicines, particularly benzoyl peroxide, unless your prescriber directs the combination. A formulated prescription combination and several separate products layered together are different treatment plans.5

Where does tretinoin fit in the routine?

Tretinoin can enhance hydroquinone's effect in a combination cream. Topical retinoids are generally applied at night, but follow the frequency prescribed for your melasma formula. Retinol and retinaldehyde commonly appear in cosmetics; they are not the same ingredient as prescription tretinoin.6

Retinoid creams are generally less irritating than retinoid gels. Retinoids can cause redness, peeling and dry skin, irritate skin near the eyes or lips, and worsen eczema through their drying effect. Daytime moisturizer and sunscreen help address dryness and sun sensitivity. Discuss these issues before starting if your skin is already easily irritated.6

Which sunscreen belongs alongside treatment?

Use a tinted, water resistant sunscreen with broad spectrum protection against UVA and UVB and SPF 50 or higher. SPF 30 is the minimum in general melasma self care guidance; SPF 50 meets the higher melasma protection advice. Look for iron oxide, which helps protect against visible light that can worsen melasma, especially in darker skin tones.12

Iron oxide appears in the inactive ingredient list because sunscreen active ingredients cover ultraviolet protection, not visible light protection, which gives "inactive" a surprisingly busy job description. If you have oily skin, look for a formula labeled noncomedogenic, meaning it is designed not to clog pores, and a tint that blends with your skin tone.7

  • Apply sunscreen to uncovered skin 15 minutes before going outside, including on cloudy days.
  • Reapply at least every two hours and after swimming or sweating.
  • Seek shade and wear a wide brimmed hat and sun protective clothing.
  • Avoid tanning beds and sunlamps, which can worsen melasma and prevent treatment from working.
27

How long do creams take to work?

Three months is a useful checkpoint for hydroquinone. About 70% of people with melasma notice clearance or reduced pigmentation after twice daily use for that period. Melasma can resist treatment, so incomplete improvement can lead to a combined treatment plan rather than simply increasing the strength.5

Makeup can cover uneven pigmentation while treatment works. Melasma can last for years, although it sometimes goes away on its own.2

When should you stop or get medical advice?

Stop hydroquinone for excessive redness, scaling, itching or weeping. Avoid it if you are allergic to hydroquinone or an ingredient in the formula. Prolonged use at high concentrations can cause ochronosis, a persistent dark discoloration.5

Choose gentle, fragrance free skincare. Burning or stinging signals irritation, which can darken existing patches. If melasma persists despite treatment, see a dermatologist to discuss prescription medicines or procedures.2

Some imported skin lightening products have contained mercury or steroids that were missing from their labels. Unsupervised steroid use can cause fragile skin and permanent discoloration. Use products recommended by your dermatologist rather than an unidentified lightening cream. Never apply household liquid bleach to skin.7

Which creams can you use during pregnancy?

Azelaic acid cream is an option during pregnancy. Do not use hydroquinone, tretinoin or tranexamic acid during pregnancy. Hydroquinone's safety during breastfeeding has not been established. If you are planning pregnancy, discuss a prescription retinoid with your prescriber before using it.156

What is the best treatment for melasma on the face?

The choice depends on pigment depth, treatment response and pregnancy status. Hydroquinone and combination creams are options for upper layer pigmentation; azelaic acid offers an alternative. Keep sun protection in place after improvement: even a few hours of sun exposure can restart pigmentation and undo months of treatment.1

Which skin treatments help with melasma?

When creams do not lighten melasma, doctors sometimes use glycolic acid or trichloroacetic acid peels, laser treatment, or oral tranexamic acid. Botulinum toxin is an emerging approach, not an established routine melasma treatment. Procedures need a dermatologist's treatment plan rather than a home experiment.14

Where this answer comes from

  1. 1Melasma - Skin Disordersmerckmanuals.com
  2. 2Melasma: Self-careaad.org
  3. 3Skin Pigmentation Disordersmedlineplus.gov
  4. 4Melasma Management: A Comprehensive Review of Treatment Strategies Including BTX‐Apmc.ncbi.nlm.nih.gov
  5. 5Hydroquinone (bleaching cream)dermnetnz.org
  6. 6Topical retinoids (vitamin a creams)dermnetnz.org
  7. 7How to fade dark spots in darker skin tonesaad.org