Pigmentation is not one condition
The single most common reason treatment fails is that the wrong thing was treated. Melasma, sun-induced spots and post-inflammatory marks all look like brown patches to the person in the mirror, but they behave entirely differently.
Melasma is symmetrical, hormone and light sensitive, and chronic. Sun spots are discrete and accumulate with years of exposure. Post-inflammatory marks follow acne, eczema, bites or injury and usually fade on their own given time and protection.
A treatment that suits one can worsen another. Aggressive laser on melasma, for example, frequently causes rebound darkening — which is exactly why an examination precedes treatment rather than following it.
Sunscreen is the treatment, not an accessory
Almost every pigmentation plan depends on daily broad-spectrum sun protection, and almost every relapse traces back to it stopping. Ultraviolet light is the obvious trigger, but visible light matters too, particularly in melasma, which is why a tinted sunscreen is often advised.
Sun protection also means the things people forget: reapplication through the day, a cap or scarf, awareness of window glass in cars and offices, and the fact that pigmentation can be driven by heat as well as light.
- Apply sunscreen every morning, indoors as well as outdoors
- Reapply every few hours when you are outside
- Use shade, caps and scarves as well as cream
- Remember heat exposure — cooking over flame, saunas — in melasma
Stopping treatment when the skin looks good
Pigmentation control has an active phase and a maintenance phase. Most patients stop at the end of the active phase because the skin looks better — and the pigment returns over the following months.
Maintenance is usually lighter and less frequent than active treatment: a reduced-strength topical, periodic peels or toning sessions, and sustained sun protection. It is planned deliberately rather than left to chance.
The creams that make it worse
Unprescribed skin-lightening and steroid creams are a recurring cause of worsened pigmentation in India. They often produce initial lightening, followed by thinning, visible vessels, and rebound darkening that is harder to treat than the original problem.
If you have used such a cream, bring it to your consultation. Stopping it abruptly can cause a flare, so the withdrawal is usually managed rather than immediate.
In short
Pigmentation is managed, not cured. Identify the type, protect from light and heat daily, and continue maintenance after the active phase — those three together are what prevent the cycle repeating.