Acne scars

Acne scars are permanent structural changes in the skin that arise as a result of the inflammatory process associated with common acne or more severe acne. They are not solely an aesthetic issue – from a medical standpoint, they represent the outcome of improper healing of the skin after damage to the hair-follicle-sebaceous units and surrounding tissues. The nature of the scars, their depth, and extent depend on various factors, including the intensity of the inflammation, its duration, genetic predispositions, and the method of acne treatment. Modern dermatology and aesthetic medicine today offer effective methods for reducing acne scars; however, proper diagnosis of the scar type and individualized therapy planning are crucial.

Acne scars – how they form

The mechanism of acne scar formation is directly related to the inflammatory process within the dermis. In the course of acne, the following occurs:

blockage of hair follicle-sebaceous gland openings,
overproduction of sebum,
proliferation of Cutibacterium acnes bacteria,
development of inflammation of varying intensity.

If the inflammatory process involves deeper layers of the skin, it leads to damage to collagen and elastin fibers. The body attempts to rebuild the damaged tissue, but the regeneration process does not always proceed correctly. As a result, the following forms:

collagen deficiency – leading to atrophic scars,
excessive collagen production – resulting in hypertrophic scars or keloids.

Factors increasing the risk of acne scar formation:

chronic, untreated inflammatory acne,
mechanical damage to lesions (squeezing, scratching),
improper skin care,
delayed or poorly chosen dermatological treatment,
individual genetic predispositions.

Acne scars – what they look like

Acne scars do not constitute a homogeneous group of lesions. Their appearance and nature are key to selecting the appropriate treatment method. The most commonly distinguished types are:

Atrophic Scars

These are the most common type of acne scars. They form due to tissue loss and insufficient collagen synthesis.

Types of atrophic scars:

Ice pick - narrow, deep, resembling punctures,
Boxcar - wider, with distinct, vertical edges,
Rolling scars - shallow, wavy depressions causing an uneven skin texture.

Hypertrophic Scars

Raised above the surface of the skin,
Confined to the area of the original inflammatory lesion,
More commonly located on the back and chest.

Keloids

Grow beyond the boundaries of the original lesion,
Can cause itching, pain, and a feeling of tightness,
Tend to recur.

It is important to distinguish scars from post-inflammatory hyperpigmentation, which are pigment changes and do not represent permanent damage to the skin structure.

Acne scars – how to remove

Removing acne scars is a process that requires time, consistency, and an individualized approach. In clinical practice, the aim of therapy is not so much the complete “removal” of scars, but rather to:

reduce the depth of their structure,
even out the skin’s surface,
improve skin tension and density,
stimulate regenerative processes.

The effectiveness of the therapy depends on:

the type of scars,
their depth and extent,
the age of the scars,
the overall condition of the patient’s skin.

The best results are achieved through combined therapies, which work on different levels of the skin. A key role is played by the stimulation of fibroblasts to produce new collagen and the remodeling of the dermis.

Important principles of therapy:

treatment should begin after controlling active acne,
procedures should be performed in series,
appropriate post-procedure care and photoprotection are essential.

Treatments for acne scars

Contemporary aesthetic medicine offers a wide range of procedures with documented clinical efficacy that enable the gradual remodeling of skin affected by acne scars. The choice of method depends on the type of scars, their depth, and the overall quality of the skin. In clinical practice, the best results are achieved through combination therapies.

Fractional Laser Therapy

causes controlled micro-damage to the skin in the form of thermal microcolumns,
initiates intensive skin remodeling by stimulating fibroblasts to produce collagen and elastin,
leads to the gradual reduction of scars and smoothing of the skin surface,
improves the tension, density, and uniformity of skin structure,
particularly effective in treating atrophic scars like boxcar and rolling.

Microneedle Radiofrequency

combines mechanical microneedling with controlled heating of the dermis using radiofrequency waves,
acts on deeper skin levels than traditional microneedling,
leads to skin densification and improvement of its supportive structure,
reduces the visibility of atrophic scars and improves skin elasticity,
works well for patients with concurrent skin laxity.

Microneedling (Microneedle Mesotherapy)

involves performing controlled microneedling within the skin,
activates natural regenerative mechanisms and repair processes,
increases collagen and elastin synthesis in the dermis,
improves texture, tone, and overall skin quality,
recommended for the treatment of shallow scars and as a maintenance therapy for other procedures.

Platelet-Rich Plasma

uses autologous growth factors derived from the patient's blood,
stimulates tissue regeneration and angiogenesis processes,
accelerates healing and skin remodeling after invasive procedures,
improves the quality and elasticity of the skin around scars,
most commonly used as an element of supportive and regenerative therapy.

Tropocollagen Mesotherapy

involves intradermal administration of tropocollagen – the physiological form of type I collagen,
supports the rebuilding of the extracellular matrix in the scar area,
stimulates fibroblasts to produce new endogenous collagen,
increases density, elasticity, and mechanical resilience of the skin,
leads to the gradual reduction of atrophic scars and leveling of skin structure,
constitutes an important element of combination therapy after laser therapy or microneedle radiofrequency.

Clinical Summary

Acne scars are a permanent consequence of the inflammatory process, but they do not constitute an irreversible problem. Key factors include:

proper classification of scars,
an individualized therapeutic plan,
application of methods with proven effectiveness.

The earlier the treatment is implemented and the more precisely procedures are selected, the better and more predictable results can be achieved.