Addressing Hyperpigmentation — A Treatment Pathway

Last updated: 5 March 2026

Hyperpigmentation — the appearance of darker patches or spots on the skin — is one of the most common concerns that brings patients to aesthetic clinics. Whether caused by sun damage, hormonal changes, inflammation, or ageing, unwanted pigmentation can significantly impact skin confidence. The good news is that modern aesthetic medicine offers multiple effective treatment pathways, though successful management requires accurate diagnosis, patience, and a systematic approach. At Axiom Aesthetics, our practitioners are experienced in assessing and treating all forms of hyperpigmentation using evidence-based protocols.

Understanding the Types of Hyperpigmentation

Accurate classification of hyperpigmentation is the essential first step, as different types require different treatment approaches. Research by Vashi and Kundu (2013) in The Journal of Clinical and Aesthetic Dermatology identified the major categories:

Solar Lentigines (Sun Spots)

Flat, well-defined brown spots caused by cumulative UV exposure. They result from localised increases in melanocyte number and melanin production. Most commonly found on the face, hands, chest, and shoulders.

Melasma

Symmetrical, blotchy brown or grey-brown patches typically affecting the cheeks, forehead, upper lip, and chin. Melasma is driven by hormonal factors (pregnancy, contraceptive pill), UV exposure, and genetic predisposition. It is notoriously challenging to treat due to its tendency to recur and its sensitivity to inflammation.

Post-Inflammatory Hyperpigmentation (PIH)

Dark marks left after skin inflammation or injury — including acne, eczema, burns, or poorly performed aesthetic treatments. PIH is more common and more persistent in darker skin tones (Fitzpatrick types III-VI) due to higher melanocyte activity.

The Treatment Pathway

Step 1: Comprehensive Assessment

Effective treatment begins with thorough assessment including clinical examination under Wood’s lamp (which helps determine whether pigment is epidermal, dermal, or mixed), patient history, identification of contributing factors, and assessment of skin type. Dermoscopy may also be used to evaluate pigmented lesions and exclude melanoma or other pathology requiring medical referral.

Step 2: Sun Protection Foundation

No pigmentation treatment will succeed without rigorous daily sun protection. UV exposure is the primary driver of melanin production, and even brief unprotected sun exposure can trigger recurrence. Broad-spectrum SPF 50+ with iron oxide (which blocks visible light — important for melasma) should be applied daily, regardless of weather or season. Research by Castanedo-Cazares et al. (2014) demonstrated that visible light alone can worsen melasma, making iron oxide-containing sunscreens essential.

Step 3: Topical Treatment Programme

Evidence-based topical agents for hyperpigmentation include:

• Vitamin C (L-ascorbic acid 15-20%) — inhibits tyrosinase and reduces oxidised melanin
• Retinoids — accelerate cell turnover and inhibit melanin transfer to keratinocytes
• Azelaic acid (15-20%) — inhibits tyrosinase and has anti-inflammatory properties; safe in pregnancy
• Niacinamide (4-5%) — blocks melanosome transfer from melanocytes to keratinocytes
• Alpha arbutin — a gentle tyrosinase inhibitor derived from bearberry extract
• Tranexamic acid (topical) — emerging evidence for melasma management through plasmin inhibition
• Kojic acid — a tyrosinase inhibitor derived from fungal fermentation

Step 4: Professional Treatments

In-clinic treatments can significantly accelerate pigmentation improvement when combined with appropriate topical therapy:

• Chemical peels — superficial peels with glycolic acid, salicylic acid, or modified Jessner’s solution promote even desquamation of pigmented epidermis. Mandelic acid peels are particularly suitable for darker skin tones
• IPL (Intense Pulsed Light) — effective for solar lentigines; targets melanin with broad-spectrum light. Less suitable for melasma due to rebound risk
• Q-switched and picosecond lasers — target melanin with ultra-short pulse durations, shattering pigment particles for immune clearance
• Microneedling with lightening serums — creates micro-channels for enhanced delivery of depigmenting agents
• Mesotherapy with tranexamic acid — direct injection of depigmenting compounds showing promising results for melasma

Step 5: Maintenance and Prevention

Pigmentation management is an ongoing process. Maintenance involves continued use of tyrosinase-inhibiting topicals, daily broad-spectrum sun protection, periodic professional treatments, and avoidance of known triggers.

Special Considerations for Melasma

Melasma requires particular caution as aggressive treatments can trigger rebound hyperpigmentation through the inflammatory cascade. A conservative, layered approach is recommended, as outlined in the updated treatment algorithm by Rodrigues and Pandya (2015) in the Journal of Clinical and Aesthetic Dermatology. Key principles include avoiding excessive heat, using anti-inflammatory agents alongside depigmenting treatments, and maintaining realistic expectations about the chronic nature of this condition.

Frequently Asked Questions

Can hyperpigmentation be permanently removed?

Solar lentigines and PIH can often be effectively cleared with appropriate treatment. However, melasma is a chronic condition that tends to recur. Whilst significant improvement is achievable, ongoing maintenance treatment and sun protection are typically required to manage melasma long-term.

Is laser treatment safe for dark skin tones?

Certain lasers can be used safely on darker skin tones by experienced practitioners using appropriate settings. However, the risk of PIH is higher, so conservative parameters and proper care are essential. Chemical peels and topical treatments may be preferred first-line options for darker skin types.

How long does it take to treat hyperpigmentation?

Treatment timelines vary: solar lentigines may respond within 2-4 treatments; PIH typically improves over 3-6 months; melasma usually requires 3-6 months of combined treatment for significant improvement, with ongoing maintenance.

Why does my pigmentation keep coming back?

Recurrence is common with melasma due to its hormonal and genetic components. UV exposure is the primary trigger for recurrence. Inconsistent sun protection, hormonal changes, and discontinuation of maintenance treatments all contribute. A long-term management plan is essential.