Heal sun-damaged skin: The dermatologist’s guide to reversing hyperpigmentation

Sun exposure can leave the skin red, painful, dry and irritated. For some people, however, the effects do not end when the sunburn disappears. Dark patches can remain on the affected areas, sometimes for several months.

This darkening can happen because inflammation from sunburn stimulates the skin to produce more melanin, the pigment responsible for skin colour. The resulting dark patches are often known as post-inflammatory hyperpigmentation.

The problem can be particularly noticeable in people with darker skin because their skin naturally contains more melanin and may respond to inflammation by producing additional pigment.

The good news is that sun-related hyperpigmentation can often fade with time. The most important steps are allowing the damaged skin to heal, avoiding further irritation and protecting it from additional ultraviolet exposure.

Trying to remove the dark patches too quickly, however, can have the opposite effect. Irritating already damaged skin can trigger more inflammation and potentially make the pigmentation darker.

In this article, Tribune Online explains how to care for sun-damaged skin, support recovery from sunburn and reduce the appearance of hyperpigmentation.

Cool the skin

The first step after getting sunburned is to get out of the sun. A cool bath or shower can help to reduce the heat and discomfort associated with sunburn. A cool, damp cloth can also be placed over the affected area for several minutes at a time.

The water should be cool rather than extremely cold. The purpose is to make the skin more comfortable without causing another form of irritation. After bathing, gently pat the skin dry instead of rubbing it.

Sunburned skin is already inflamed and sensitive, so unnecessary friction can make the irritation worse. Cooling the skin does not reverse the ultraviolet damage that has already occurred, but it can provide relief while the skin begins its natural healing process.

Apply aloe vera moisturiser

Aloe vera is commonly used to soothe sunburned skin. The American Academy of Dermatology recommends  applying a moisturiser containing aloe vera or soy to sunburned skin while it is still slightly damp. This can help to soothe the skin and reduce dryness.

Aloe vera should not, however, be described as a substance that literally pulls heat out of the skin or immediately stops the inflammatory response. Its main role is to provide soothing and moisturising care while the damaged skin recovers.

Choose a gentle product and stop using it if it causes burning, stinging or worsening irritation.

The same principle applies to other skincare products. Freshly sunburned skin does not need an aggressive collection of treatments. It needs simple, gentle care.

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Keep the skin moisturised

Sunburn can leave the skin extremely dry and tight. As the damaged outer layer begins to recover, regular moisturising can help to reduce dryness and discomfort. Apply a gentle moisturiser to the affected area, particularly after bathing while the skin is still slightly damp.

Avoid products that cause significant stinging or irritation. Keeping the skin moisturised does not instantly remove hyperpigmentation, but it supports the recovery of the damaged skin and reduces the temptation to scratch or peel it.

The goal during this stage is to allow the skin barrier to recover before introducing products specifically intended to treat dark spots.

Do not peel the skin

Peeling is common after sunburn. As damaged skin begins to shed, it may be tempting to pull away loose pieces. This should be avoided.

Do not deliberately peel, scratch or pick the affected skin.

Removing peeling skin before it is ready can cause additional injury and inflammation. This matters because inflammation itself can stimulate additional pigment production.

In other words, trying to remove the visible evidence of sunburn too aggressively may increase the likelihood of dark marks. Allow the skin to shed naturally. Continue using a gentle moisturiser to reduce dryness and discomfort while the damaged layer gradually comes away.

Do not pop sunburn blisters

More severe sunburn can cause blisters. These should not be deliberately popped. Breaking a blister can expose vulnerable skin and increase the risk of infection. Instead, protect the area and allow the blister to heal naturally.

If a blister breaks accidentally, keep the area clean and avoid picking at the remaining skin.

Extensive blistering, severe pain or a large area of burned skin may require medical assessment. Sunburn accompanied by symptoms such as fever, chills, nausea, dizziness or severe weakness should also receive medical attention.

Protect healing skin from the sun

Sun protection is one of the most important steps in preventing sunburn-related hyperpigmentation from becoming darker.

Once the skin has been damaged, exposing it to more ultraviolet radiation can prolong the damage and encourage additional pigment production.

When outdoors, protect the affected area with clothing where possible and stay in the shade.

Use a broad-spectrum sunscreen with an SPF of at least 30 on exposed skin. 

A water-resistant sunscreen can be particularly useful when sweating or spending time outdoors.Sunscreen should be reapplied according to the product’s directions, especially after swimming or heavy sweating.

For people prone to hyperpigmentation, tinted sunscreens containing iron oxide may provide additional protection because visible light can also contribute to worsening pigmentation.

Sun protection should continue even after the redness and peeling have disappeared. The dark patches can remain sensitive to further exposure long after the original sunburn has healed.

Do not exfoliate fresh sunburn

Chemical exfoliants should not be used on freshly sunburned or irritated skin. Products containing alpha hydroxyl  acids and beta hydroxy acids can have a place in some skincare routines, but they are not appropriate for actively burned skin.

Applying an exfoliating acid to damaged skin can cause additional irritation, burning and dryness. Physical scrubs should also be avoided during this stage. Scrubbing peeling or sensitive skin does not make it heal faster. 

Instead, it can create additional inflammation and potentially contribute to more pigmentation. Wait until the skin has completely recovered before considering exfoliating products for the treatment of remaining dark patches.

Treat the dark patches gradually

Once the sunburn has completely healed, attention can shift towards the hyperpigmentation. 

Post-inflammatory hyperpigmentation does not usually disappear immediately. The time required for it to fade depends on factors such as the depth of the pigment, the severity of the original inflammation and the individual’s skin type.

Some dark spots can take several months to become noticeably lighter.

Ingredients such as azelaic acid, glycolic acid, kojic acid, retinoids and vitamin C among ingredients that may help fade dark spots but should be introduced carefully.

There is no benefit in applying several strong products at the same time simply because the pigmentation is noticeable. Excessive irritation can trigger another inflammatory response and potentially create additional darkening. A simple, consistent routine is preferable to constantly changing products.

Avoid harsh skin-lightening products

The desire to remove dark patches quickly can lead some people to use harsh bleaching products or unregulated skin-lightening creams.

This can worsen the problem. Irritating the skin can cause inflammation, and inflammation can contribute to further hyperpigmentation.

The American Academy of Dermatology warns against using liquid bleach on the skin and notes that some unregulated skin-lightening products have contained undeclared ingredients such as steroids or mercury.

Avoid products that promise to completely remove pigmentation within a few days.

Hyperpigmentation develops within the skin, so treatment requires time. A product that causes significant burning, peeling or irritation is not necessarily working faster. In many cases, it is simply damaging the skin.

Be patient with hyperpigmentation

One of the most important parts of treating sun-related pigmentation is understanding that improvement takes time. The original sunburn may disappear within days, while the dark marks left behind can remain much longer.

The pigmentation may gradually become lighter as the skin renews itself and the excess pigment is cleared.

The American Academy of Dermatology notes that some dark spots may take six to 12 months to fade, while pigmentation located deeper in the skin can take considerably longer.

This means that a lack of immediate improvement does not necessarily mean that treatment has failed. What matters is preventing new inflammation and protecting the skin from further ultraviolet exposure.

Know when to see a dermatologist

Persistent or severe hyperpigmentation may require professional assessment. A dermatologist can determine whether the dark patches are actually post-inflammatory hyperpigmentation or another condition that may require a different treatment.

If the pigmentation remains despite appropriate skin care, professional treatment may be considered. Depending on the cause and severity, a dermatologist may recommend prescription treatments or procedures such as chemical peels, microdermabrasion or laser-based treatments.