Facial ageing
To assess the effectiveness of laser treatment for facial rejuvenation, it is essential to review the mechanisms of skin ageing.
Facial ageing results from several processes : a gradual decline in dermal collagen, changes in elastin fibres, reduced natural hyaluronic acid, thinning of the skin– development of pigmentation changes (dark spots) and tissue laxity.
From age 30, collagen production declines by around 1 % each year. This cumulative loss explains the appearance of fine lines, followed by more pronounced wrinkles. Chronic exposure to ultraviolet radiation accelerates this process, causing photoageing characterised by an uneven complexion and altered skin texture.
An effective facial rejuvenation treatment must therefore improve dermal quality, stimulate collagen synthesis and even out the complexion.
How does laser treatment rejuvenate the face ?
Lasers used in aesthetic medicine emit coherent light at a specific wavelength. This energy is absorbed by precise targets in the skin known as chromophores, mainly water and melanin.
In facial rejuvenation, the main aim is to stimulate synthesis within the dermis. Light energy produces controlled tissue heating, triggering a biological response called neocollagenesis.
Neocollagenesis is the synthesis of new collagen by fibroblasts. This process gradually improves skin density and quality, increases firmness and reduces fine-line depth.
This mechanism has been demonstrated in histological studies showing a measurable increase in collagen fibres after treatment.
The different types of laser for facial rejuvenation
The effectiveness of laser treatment for facial rejuvenation depends on the technology used.
The effectiveness of laser treatment for facial rejuvenation depends directly on the technology, depth of action and intended skin target. Not all lasers have the same indications, intensity or after-effects.
Three main categories of laser are used for facial rejuvenation : non-ablative lasers, ablative lasers and pigment or vascular lasers.
Non-ablative fractional laser for gradual facial rejuvenation
Non-ablative fractional lasers, used for photorejuvenation, act deeply without damaging the epidermis. They create microscopic zones of thermal stimulation within the dermis while leaving some surrounding skin intact.
This technique offers several advantages : gradual stimulation of collagen synthesis, improved skin quality, reduced enlarged pores, straightforward aftercare and rapid recovery.
Clinical studies show a measurable improvement in dermal density after several sessions. This type of laser is particularly suitable for patients with mild to moderate ageing.
Ablative laser for intensive facial rejuvenation
Ablative lasers, particularly CO2 or erbium, controllably vaporise part of the epidermis while heating the underlying dermis.
They are more effective for wrinkles, acne scars and advanced photoageing.
Results can be significant after a single session. However, recovery is longer and includes a temporary inflammatory phase. The indication must be carefully established after a clinical examination.
Which laser can plump facial skin ?
Laser treatment does not add volume or fill tissues like an injectable product. It works by stimulating collagen synthesis, which supports skin firmness and density.
Non-ablative fractional lasers are indicated when the skin is slightly lax and thinner. They stimulate the skin deeply without damaging its surface. After several sessions, the skin gradually becomes denser and firmer.
Fractional ablative lasers, such as CO2 and erbium, act more intensely. They induce more pronounced dermal remodelling and can significantly improve skin quality. However, after-effects are more substantial.
The plumping achieved with laser treatment remains gradual and moderate. With substantial volume loss, hyaluronic acid or Sculptra treatment may be needed. Laser treatment is particularly suitable when reduced firmness is associated with lower collagen levels.
How effective is laser treatment for facial rejuvenation ?
The available scientific evidence confirms the effectiveness of laser treatment in several aspects of facial rejuvenation.
• Improved skin quality : histological studies demonstrate an increase in dermal collagen after fractional laser treatment. Clinically, patients have smoother skin, fewer fine lines and a more refined skin texture.
• Reduction of superficial wrinkles : fine lines improve considerably with laser treatment, particularly fractional lasers. However, laser treatment acts on skin quality rather than muscle contraction. Deep expression lines may require complementary botulinum toxin treatment (botulinum toxin is indicated only for certain expression lines).
• Correction of pigmentation marks : laser treatment for sun spots provides rapid, visible results. Eliminating pigmentation irregularities significantly improves the face's overall appearance.
• Measurable dermal stimulation : post-treatment histological analyses show : increased dermal thickness, reorganisation of collagen fibres and improved skin elasticity. These findings confirm that laser facial rejuvenation relies on objective biological mechanisms.
How many sessions are needed for effective laser facial rejuvenation ?
The number of sessions depends on the type of laser, the patient's age, the degree of ageing and the therapeutic goals.
On average, 3 to 5 sessions are recommended for a non-ablative laser, 1 session for an ablative laser, sometimes supplemented
Results appear gradually because collagen synthesis takes several months.
Can laser treatment replace surgery for facial rejuvenation ?
Laser treatment improves skin quality and mild skin laxity but does not correct severe sagging.
With substantial excess skin or pronounced ptosis, significant tissue tightening requires surgery or hyaluronic acid injections using a non-surgical lifting technique.
Laser treatment is therefore an effective non-surgical option for preventing ageing, treating moderate ageing and improving skin quality.
It does not replace a facelift or injections.
Does laser treatment remove wrinkles ?
Laser treatment can reduce certain wrinkles but does not erase all of them. Its effectiveness depends on wrinkle type.
Superficial wrinkles respond well to fractional lasers, which stimulate collagen production, improve skin quality and gradually soften fine lines.
Deep wrinkles, particularly those associated with muscle contraction, often require complementary botulinum toxin treatment (only certain wrinkles can be treated, in keeping with botulinum toxin indications). Laser treatment acts on skin quality rather than muscle activity.
For substantial sagging or pronounced folds visible at rest, a combined approach may be indicated. Laser treatment is therefore effective for softening fine lines, but its effect on deep wrinkles remains partial.
