Hyperpigmentation

Hyperpigmentation is a very common and usually harmless condition where patches of skin turn darker than the surrounding area. It happens when the skin makes too much melanin which is the pigment that gives skin its colour. There are different types of hyperpigmentation and accurate diagnosis is critical for successful treatment. In this guide we explain what hyperpigmentation is, causes and the main types. We also review the most effective treatments from everyday skincare through to professional treatments.

City Skin Clinic is an online skincare clinic. We provide and prescribe medical skincare and do not offer in-clinic procedures such as chemical peels, laser treatment or energy-based devices. However, we have explained all the options below because we believe the public deserve clear, evidence-led information without commercial bias.

What is Hyperpigmentation?

Essentially, hyperpigmentation happens when the skin makes too much melanin. We have cells called melanocytes in our bodies that produce melanin. This is the pigment that gives skin, hair and eyes their colour. There are some triggers that can make these cells produce more melanin or spread it unevenly. When this happens you get a darker patch of skin. Hyperpigmentation can appear on any skin tone and almost anywhere on the body. However, the face, neck, chest and hands are simply the most common sites. The triggers for hyperpigmentation range from sun exposure to hormones, inflammation, age and genetics. We cover these below and in more detail in our blog post on what causes hyperpigmentation.

What are the Different Types of Hyperpigmentation?

There are several types of hyperpigmentation. These can look different, sit at different depths in the skin and respond to specific treatments or approaches. The main types of hyperpigmentation are:

• Sun & age spots: These flat brown spots, also called solar lentigines, develop on sun-exposed areas like the face, hands and chest. They build up from years of UV exposure and tend to persist year-round rather than fade in winter. You can read more about how sun spots form.
• Melasma: This shows as larger, often symmetrical patches of brown or grey-brown pigment on the cheeks, forehead and upper lip. A mix of hormones, sun and heat drives melasma, so it is common in pregnancy (when it is called chloasma) and in deeper skin tones. It is the most stubborn type to treat and you can learn about it in more detail on our specific melasma guide.
• Post-inflammatory hyperpigmentation: These flat dark marks appear after inflammation or injury to the skin. Post-inflammatory hyperpigmentation is very common after acne and in deeper skin tones. It can also follow eczema, a burn or an aggressive cosmetic treatment. We cover it in more detail on our post-inflammatory hyperpigmentation bog post.
• Freckles: These small light-brown spots appear with sun exposure, mostly on the face and shoulders. Unlike sun spots, freckles tend to fade in winter and are usually genetic rather than a sign of damage.

Most people have a mix of these, and certain medicines or hormonal changes can trigger excess pigment deposition too. Whilst the above types of hyperpigmentation are harmless, if you see any new dark patches of skin or if an existing dark spot is changing, see a doctor urgently. This is essential to rule out anything more serious like skin cancer.

How is Hyperpigmentation Treated?

The right treatment depends on the type, how deep the pigment sits and your skin tone. Topical skincare is the mainstay for most facial pigment, and it works by slowing melanin production and helping the skin shed pigmented cells faster. The main groups of topical pigment fading actives are:

• Pigment suppressors: These reduce how much melanin the skin makes. The group includes hydroquinone, which is the strongest and available by prescription only. Arbutin, kojic acid, azelaic acid, niacinamide and tranexamic acid are also useful pigment fading agents.
• Antioxidants: Vitamin C brightens the skin and protects against the UV damage that drives pigment.
• Retinoids: These speed up cell turnover so pigmented cells shed faster. They run from over-the-counter retinol and retinaldehyde up to tretinoin or adapalene. The last two are available by prescription only.
• Exfoliating acids: AHAs like glycolic, lactic and mandelic acid lift surface pigment by exfoliating, whilst salicylic acid suits oilier, acne-prone skin. Milder acids are safer in deeper skin tones, where stronger ones can trigger more marks.
• Sunscreen: A daily broad-spectrum SPF 30 or higher is essential, since UV deepens pigment and undoes any progress made with the other actives.

Extensive or severe hyperpigmentation usually needs prescription treatments containing agents like tretinoin and hydroquinone. These are often combined with actives like tranexamic acid and hydrocortisone to help get rid of more stubborn hyperpigmentation.

Professional in-clinic procedures can also help, particularly for stubborn, recurrent or deeper hyperpigmentation. However, these can carry a real risk of making pigment worse if not done correctly or on the wrong person. As such, they need an experienced practitioner. The main professional hyperpigmentation treatments are:

• Chemical peels: These peels use strong acids to remove the surface layers of skin and lift pigment that sits near the top. Milder peels suit most people. Stronger ones can trigger fresh marks in deeper skin tones, so the type and strength must match your skin.
• Laser & IPL: Lasers and intense pulsed light (IPL) target and break down excess melanin. They work best on discrete sun spots and freckles. However, they can worsen melasma and darker skin, so device choice, correct protocol and patient selection are critical.
• Microneedling: Regular microneedling creates tiny channels that stimulate the skin and can help topical actives penetrate. It is gentler than laser and is suitable for general skin evening out rather than distinct patches of hyperpigmentation.

For all of these, topical treatment is usually the safer first step, especially in deeper skin tones or melasma where irritation can itself trigger further darkening.

How Long Does Hyperpigmentation Take to Fade?

Hyperpigmentation fades gradually rather than overnight, because treatment has to slow melanin production and then let the skin shed the pigment it already holds. Most people notice early improvement within 2 to 3 months, with more meaningful change over 3 to 6 months. How quickly it fades depends on the type and how deep the pigment sits. Surface pigment, such as many sun spots and recent post-inflammatory marks, lifts more readily. Deeper pigment, and melasma in particular, is slower and tends to come back, so it usually needs ongoing maintenance. Sun protection matters throughout, since a few unprotected days can undo months of progress. So the most useful thing you can do is stay patient, consistent and rigorous with daily sunscreen.

Can You Prevent Hyperpigmentation?

You cannot prevent every type, especially the genetic and hormonal ones, but you can reduce how often pigment appears and how dark it gets. Sun protection matters most, since UV is the main trigger behind almost every type. Research shows daily sunscreen prevents measurable signs of sun damage. Guidelines recommend a broad-spectrum with at least SPF 30 (or higher for melasma) to help prevent new pigment and stop existing marks from darkening. Treating acne early and not picking at spots reduces the marks it leaves. Where pigment is hormonal or due to medicines, it can help to review your medications with your doctor.

At City Skin Clinic, our doctors create personalised skincare to fade hyperpigmentation and melasma using actives like tretinoin, azelaic acid and hydroquinone where appropriate. Every plan starts with an online consultation and is built around your skin and your goals. Start your online consultation today. The journey towards great skin starts here.

This article is intended for general informational purposes only and is not a substitute for medical advice, diagnosis or treatment. Always consult a qualified medical professional with any concerns about your skin or treatment options.