Pigmentation can return even after dark patches appear to have faded because the underlying trigger may still be active, according to dermatologist Dr Ashwini Kandikatla of Dermis Oracle, Mumbai. Rather than focusing only on lightening existing marks, understanding what is causing excess pigment can be important for preventing it from repeatedly returning. Common factors include sun exposure, acne-related inflammation, hormonal changes and skincare routines that irritate the skin.

Sun exposure is one of the key factors that can worsen pigmentation. Dr Ashwini explained that ultraviolet radiation stimulates melanocytes, the cells responsible for producing melanin. Continued exposure can make existing pigmentation darker and may also contribute to the development of new areas of uneven skin tone. The dermatologist also noted that visible light can influence certain pigmentary conditions, particularly in deeper skin tones, making consistent photoprotection an important part of pigmentation management even after the skin appears clearer.

Acne can also create a continuing cycle of pigmentation. According to Dr Ashwini, post-inflammatory hyperpigmentation develops when inflammation associated with acne stimulates excess melanin production. When breakouts repeatedly occur, new marks can appear before older pigmentation has had enough time to fade. This makes controlling acne relevant not only for managing active breakouts but also for reducing the repeated appearance of pigmentation, particularly in Indian skin where marks following inflammation can sometimes persist for longer.

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Hormonal changes are another possible factor, especially in cases of melasma. This condition commonly causes symmetrical pigmentation on areas such as the cheeks, forehead and upper lip. Because hormonal influences can continue even when a skincare routine remains consistent, pigmentation that repeatedly returns may require closer attention to its underlying cause rather than simply adding more brightening products.

The skincare routine itself can sometimes contribute to the problem. Frequent exfoliation, combining multiple potent active ingredients, harsh scrubbing and repeatedly switching products can weaken the skin barrier and trigger inflammation. For skin that is prone to pigmentation, that inflammation can stimulate additional pigment production. Dr Ashwini also cautioned against relying on repeated home remedies or salon treatments. She said a routine should be judged by how consistently the skin can tolerate it without redness, burning or prolonged sensitivity, rather than by how intense it feels.

Pigmentation treatment, therefore, should begin with identifying the cause instead of following a one-product-fits-all approach. Depending on the underlying condition, ingredients such as azelaic acid, retinoids, vitamin C or niacinamide may form part of a treatment plan. The dermatologist emphasised that consistency and tolerance can be more valuable than excessive treatment intensity. For recurring or persistent pigmentation, identifying the trigger and choosing an appropriate treatment approach can help address the reason the discolouration keeps returning rather than only treating the visible marks.

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