Skin pigmentation can appear as a result of sun damage, hormonal changes, post-acne marks or as a natural part of the ageing process. Although many of these spots look permanent, modern medical aesthetics offers highly effective options. For pigmentation that does not resolve with topical creams or sunscreen alone, glutathione, vitamin C mesotherapy and chemical peels can provide meaningful improvement when used together or separately. Choosing the right treatment begins with understanding the type of pigmentation. Results vary from person to person. Any treatment plan is subject to physician assessment.
Types of Skin Pigmentation and Their Mechanisms
Not all pigmentation forms through the same mechanism, so the treatment approach differs from one type to another:
- Melasma (chloasma): Hormonally driven, symmetrical dark patches that typically appear on both sides of the face. Triggered by pregnancy, oral contraceptives and sun exposure. It is known as the most stubborn type of pigmentation.
- Sun spots (lentigo solaris): Result from cumulative long-term UV damage; they settle on chronically sun-exposed areas such as the face, backs of the hands and décolletage.
- Post-inflammatory hyperpigmentation (PIH): Temporary to long-lasting darkening that develops after inflammation caused by acne, burns or skin trauma.
- Age spots (senile lentigo): Marks that appear with age and look similar to sun-related pigmentation; they are more superficial and generally respond well to treatment.
Glutathione Mesotherapy: Brightening With a Powerful Antioxidant
Glutathione is one of the most powerful antioxidants the body produces on its own. When injected into the skin it inhibits tyrosinase, the enzyme responsible for melanin production, helping to reduce hyperpigmentation and even out overall skin tone. At the same time, its strong antioxidant effect helps repair free-radical damage and revitalise ageing skin.
Glutathione mesotherapy can produce visible improvement in melasma, PIH and sun spots. Dosage and concentration are adjusted according to the intensity of the patient's pigmentation. It is usually combined with vitamin C, as the two ingredients reinforce each other's effect.
- Session protocol: Once weekly for 6–8 sessions, followed by monthly maintenance.
- Onset of effect: Initial visible improvement typically begins from the 3rd–4th session.
- Safety: Injected glutathione doses are within a safe range and have a low side-effect profile.
"The most critical factor in pigmentation treatment is sun protection. Even the strongest protocol cannot be sustained without sunscreen; UV re-activation of melanocytes can undo the progress entirely."
Vitamin C Mesotherapy: Brightening and Collagen Support
Vitamin C (ascorbic acid) is one of the most well-established ingredients in skin care. In topical products it struggles to cross the epidermal barrier, but delivered directly to the dermis through mesotherapy it acts far more powerfully and rapidly. L-ascorbic acid suppresses melanin synthesis and is also an essential cofactor for collagen synthesis, so it works on pigmentation and skin ageing at the same time.
- Pigmentation reduction: Slows melanin production by inhibiting the tyrosinase enzyme.
- Brightening: Helps disperse existing melanin particles so skin tone appears more even.
- Collagen synthesis: Supports the hydroxylation of proline, reinforcing collagen structure.
Chemical Peels: From the Surface Downwards
A chemical peel works by controlled exfoliation of the skin, removing hyperpigmented layers so that healthier, more evenly toned skin can emerge from underneath. The most commonly used peels for pigmentation include:
- Glycolic acid (20–70%): An AHA with superficial to mid-depth action. Preferred for PIH and sun spots.
- Salicylic acid (10–30%): A BHA, ideal for oily skin and acne-related pigmentation.
- TCA (trichloroacetic acid): Medium to deep peel; used for more stubborn pigmentation, including melasma. Requires a longer recovery period.
- Mandelic acid: A gentler alternative for sensitive and darker skin tones; reduces the risk of PIH.
Peel depth must be selected carefully according to the type of pigmentation and the skin tone. Particularly in Fitzpatrick 3–6 (darker) skin tones, choosing the wrong peel can trigger PIH; assessment by a qualified practitioner is essential.
Combination Protocol and Treatment Journey
In pigmentation treatment, a multi-layered protocol tends to deliver stronger results than relying on a single method. A common combined approach may be structured as follows:
- Phase 1: Glutathione + vitamin C mesotherapy (4 sessions, once weekly) to suppress melanin production.
- Phase 2: Chemical peel sessions (2–4 sessions, 2–3 weeks apart) to remove superficial hyperpigmented tissue.
- Maintenance: Monthly mesotherapy and consistent use of a strong sunscreen.
The use of SPF 50 sunscreen throughout treatment and afterwards is essential. Protecting the skin from sun exposure is the first condition for preserving the results. Wearing a hat, sunglasses and, where possible, avoiding peak sun hours are lifestyle habits that complement the treatment. Results vary from person to person. Any treatment plan is subject to physician assessment.