The biological principles of laser photorejuvenation
Laser photorejuvenation acts mainly through a phenomenon called selective photothermolysis. This mechanism involves delivering light energy that is absorbed by specific targets in the skin, particularly water within the dermis.
This absorption produces a controlled temperature rise in the dermis without damaging the epidermis.
This heat triggers several physiological reactions : fibroblasts (the cells that produce collagen) are stimulated, production of new collagen fibres restarts, existing fibres reorganise and local microcirculation improves.
This gradual process explains why photorejuvenation results appear naturally and progressively several weeks after the session.
Laser photorejuvenation : a non-ablative yet effective technique
Laser photorejuvenation differs fundamentally from ablative lasers, which cause controlled destruction of the superficial skin layer. Here, the epidermis is preserved, considerably reducing risks and post-treatment after-effects.
This non-ablative approach has several major advantages : no crusting ; straightforward recovery with mild temporary redness ; immediate return to daily activities ; a low risk of complications.
This safety is precisely what makes photorejuvenation particularly suitable for patients wishing to improve their skin without interrupting their social or professional life.
Indications for photorejuvenation
Laser photorejuvenation addresses a wide range of skin concerns linked to ageing and environmental exposure. It is particularly indicated for :
• Loss of complexion radiance.
• Early skin laxity.
• Superficial fine lines.
• Uneven texture.
• Enlarged pores.
• Diffuse redness.
• Mild pigmentation spots.
This is an overall approach aimed at improving skin quality rather than a treatment intended to alter facial volumes. With this in mind, photorejuvenation often forms part of more comprehensive management of skin ageing.
It can therefore be combined with other aesthetic medical techniques, such as hyaluronic acid or botulinum toxin injections, to act in complementary ways on different aspects of ageing.
What happens during a laser photorejuvenation session
A photorejuvenation session always begins with a personalised medical assessment. Dr Romano analyses the skin type, indications and any contraindications to tailor the laser settings.
The treatment itself is generally quick, lasting between 15 and 30 minutes depending on the treated area. Warmth or tingling may be felt, but remains entirely tolerable. A skin cooling system improves comfort during the session.
After treatment, the skin may show mild redness, comparable to moderate sunburn, which disappears within a few hours to a few days.
Photorejuvenation results : gradual and natural
One of the major advantages of laser photorejuvenation is precisely the subtlety of its results. Unlike more invasive methods, changes are not visible overnight — they develop gradually.
Over the weeks, the skin gains radiance, becomes smoother and firmer, and minor irregularities gradually fade. This change is explained by the natural production of new collagen, a process that takes time. In practice, several sessions are often needed to achieve an optimal result.
Photorejuvenation and lifestyle : a complementary approach
Photorejuvenation produces very good results, but does not replace a healthy lifestyle or appropriate daily skincare. To obtain the most benefit, it should form part of a broader approach : protecting the skin from the sun every day, adopting a consistent skincare routine, staying well hydrated and maintaining a balanced diet.
Excessive sun exposure remains one of the main factors in skin ageing and can compromise the benefits of treatment.
Studies on laser photorejuvenation
Laser photorejuvenation is now an established technique in aesthetic medicine for improving skin quality gently, gradually and naturally. By stimulating biological skin regeneration mechanisms without damaging the skin surface, it offers an optimal balance between effectiveness and safety.
This treatment reflects a modern view of aesthetic medicine, where the aim is to support skin ageing while preserving facial harmony and authenticity rather than to transform the face.
Available scientific evidence now supports the value of non-ablative laser photorejuvenation in managing skin ageing. For example, the study “Prospective study of efficacy and safety of non-ablative 1927 nm thulium fiber laser” (Li et al., 2023) showed that this type of laser is both safe and effective for treating photoageing, with significant improvements in skin texture and wrinkles . Similarly, the clinical trial “A Single-Center, Open-Label Pilot Study of a Novel Microlens Array Device for Skin Rejuvenation” demonstrated improvements in fine lines, pigmentation spots and skin quality after laser treatment, confirming its overall value across several skin parameters . Finally, research such as the study by Knight et al. (2018) on non-ablative fractional lasers demonstrated stimulation of neocollagenesis, with more than 80 % of patients showing improved skin texture, radiance and firmness . These results converge towards a clear conclusion : laser photorejuvenation acts deeply on skin biology, with clinically measurable and reproducible benefits.
