Hyperpigmentation treatment for the body

What is causing the dark patches?

Hyperpigmentation means skin has more pigment than the surrounding area. Melanin, the substance that gives skin its colour, can collect in patches on one body area or across several areas. Causes include sun damage, skin injury, hormonal changes during pregnancy, certain medicines and some underlying health conditions. Unexplained pigmentation needs a diagnosis before you choose a treatment.1

Postinflammatory hyperpigmentation means darker marks left after skin inflammation or injury. The patches appear where the original problem healed, including after dermatitis, infection or burns. Anyone can develop these marks, but they are more common, more intense and longer lasting in darker skin tones. Sunlight can darken them further.2

If acne, eczema or psoriasis is still active, treating that condition comes first. If a body product causes irritation, switch to gentler products, including those labelled for sensitive skin or without fragrance. A fading cream cannot cancel an ongoing trigger, however ambitious the name on the bottle. Do not stop a prescribed medicine yourself; ask the prescriber whether it could be causing the colour change.3

How is skin hyperpigmentation treated?

1. 1Identify the cause. A clinician can review when the pigmentation started, your medicines and the appearance of your skin. Tests are sometimes needed.
2. 2Protect exposed body skin every day. Choose broad spectrum sunscreen with SPF 30 or higher. Broad spectrum means protection against both UVA and UVB rays.
3. 3Apply sunscreen before going outside to skin that clothing will not cover. For dark spots, tinted sunscreen containing iron oxide adds protection against visible light. Choose a water resistant formula and reapply every two hours outdoors, and after swimming or sweating.
4. 4Choose a pigment treatment suited to the diagnosis. Options include azelaic acid, hydroquinone, tretinoin, glycolic acid, kojic acid, vitamin C and niacinamide. Prescription treatment is an option when home treatment is not giving the results you want.

Protective clothing keeps covered skin out of the sun, without requiring a separate bottle for each limb. Avoid excessive sun exposure and picking at pimples, which can injure skin. Treatment can take months to show improvement, so sun protection remains part of the routine rather than a temporary preparation step.1

What treatments work best for hyperpigmentation?

The best choice depends on the cause and how deep the pigment sits. Creams are used to lighten pigment in the epidermis, the outer skin layer. Results differ between treatments, and combinations are often needed for significant improvement. A dermatologist can assess the pigment depth and choose a suitable combination rather than treating every dark patch as the same problem.2

Cosmetic camouflage can hide the colour, which is a different job from persuading it to leave.2

Should you have a body peel?

Chemical peels remove skin layers through a controlled chemical injury. They are most commonly performed on the face, neck or hands, so discuss the intended body area with a dermatologist rather than choosing a peel by strength alone. Superficial peels can be used across skin types, but darker skin has a greater risk of darkening afterwards. Less aggressive treatment is worth discussing first.4

Before a peel, mention pregnancy, birth control pills, unusual scarring and medicines or conditions that make skin sensitive. Pregnancy and birth control pills can increase the risk of abnormal pigmentation after peeling. The treatment area must be free of open sores or infection. Follow the clinician's preparation instructions, including whether to pause retinoids; general peel preparation calls for stopping them one to two weeks beforehand unless instructed otherwise.4

Light peels usually provide subtle improvement over a series of treatments. Redness and scaling can last three to seven days. Medium peels involve more recovery, with crusting and peeling over seven to 14 days. Follow the prescribed moisturising and sun avoidance instructions during healing; a stronger peel is not simply a faster version of a cream.4

How long do body dark marks take to fade?

After the trigger stops, a mark a few shades darker than your natural skin colour usually fades within six to 12 months. Deeper pigment can take years; it often looks slate blue, grey or much darker brown. Treatment can speed fading, but clearing existing marks does not prevent new ones if the trigger returns.3

What should you stop for?

Stop using a skincare product if it burns or stings. Never apply liquid bleach to skin. Some imported fading products have contained unlisted mercury or steroids; choose a product made in the United States or recommended by your dermatologist.3

Hyperpigmentation alone does not cause pain or itching. See a healthcare professional if a dark patch is red, hot, itchy, painful or leaking blood, pus or other fluid. A clinician can examine unexplained patches and, when necessary, use blood tests or a skin biopsy to investigate the cause.1