The 675‐nm wavelength for treating facial melasma

Abstract

BackgroundMelasma is an acquired skin problem. It characterises sun‐exposed areas, particularly on the face, with irregular borders and bilateral distribution. With this study, we want to strengthen the scientific literature regarding the use of a 675‐nm laser device for the treatment of women and men with facial melasma pigmentary and vascular symptoms.Materials and methodsEighteen patients were treated for facial melasma. A total of three sessions at 30‐day intervals were performed with a 675‐nm laser device. A five‐point Global Aesthetic Improvement Scale was used to separately assess the improvement of the patient's skin 3 months after the last treatment (T1) compared to baseline (T0). The pain during treatment was measured using a Visual Analog Scale of 10 points. The non‐ablative laser system used emits red light with a wavelength of 675 nm through a 13 × 13 mm scanning system.ResultsAt T1, a consistent improvement in the pigmentary and vascular components was visible. This is always combined with a considerable reduction in vascular expression.ConclusionOur research shows that individuals with Fitzpatrick phototypes II to III can treat facial melasma with the 675‐nm laser source system without risk. Due to its interaction with melanin, collagen and haemoglobin chromophores, as well as its excellent capacity to penetrate tissues with less heating, this system is promising in the treatment of pigmentary and vascular illnesses such as melasma. The great success of the technology we used came from the reduced levels of inflammation produced after the treatments and the low energy level implied.

The treatment of melasma with a 785 nm wavelength laser in darker phototypes: An Egyptian experience

“…1,2 The most common treatments are chemical peels, lasers, topical and oral medications. 3 The goal of laser therapy is to target a particular chromophore that absorbs the laser's wavelength in a specific manner while minimising collateral tissue damage, according to the selective photothermolysis theory. 4 Specifically, picosecond lasers use pulse lengths much less than the target's thermal relaxation period to achieve a higher peak temperature without inflicting thermal damage to the surrounding tissues.…”

Effectiveness, safety, and patient satisfaction of carboxytherapy as an adjunctive treatment for periorbital hyperpigmentation

“…Periorbital hyperpigmentation manifests with one or more of the following features: widespread and concentrated melanin deposits (hyperpigmentation), excessive or superficial subcutaneous vasculature, and shadows resulting from pseudoherniated orbital fat 2 . Additional risk factors include racial, familial, and genetic predispositions to hyperpigmentation, allergic shiners in atopic patients, thin and semi‐transparent skin on the lower eyelids that accentuates the vascular plexus, post‐inflammatory hyperpigmentation following contact dermatitis, sleep disorders, excessive sun exposure, weight loss, addiction, smoking, and certain medications or disorders that mimic the presentations of oculodermal melanocyte or ashy dermatosis 3,4 . Idiopathic periorbital hyperpigmentation has been documented in numerous cases involving diverse skin issues 5 .…”

“… 2 Additional risk factors include racial, familial, and genetic predispositions to hyperpigmentation, allergic shiners in atopic patients, thin and semi‐transparent skin on the lower eyelids that accentuates the vascular plexus, post‐inflammatory hyperpigmentation following contact dermatitis, sleep disorders, excessive sun exposure, weight loss, addiction, smoking, and certain medications or disorders that mimic the presentations of oculodermal melanocyte or ashy dermatosis. 3 , 4 Idiopathic periorbital hyperpigmentation has been documented in numerous cases involving diverse skin issues. 5 The differentiation between pigmentary causes and those associated with vasculature can be achieved through a Wood's lamp examination, utilizing polarized light in patients presenting with periorbital hyperpigmentation.…”

Experience using 675 nm laser on three cases of Fitzpatrick skin type IV‐V with melasma

“…The 675 nm laser system (RedTouch, Deka M.E.L.A., Calenzano, Italy) used in this study, was specifically chosen for its effectiveness in targeting melanin and stimulating collagen remodeling. 7 …”

“…Adjustments in energy levels and careful monitoring are essential to cater to individual patient needs and minimize the risk of post‐inflammatory hyperpigmentation, especially in darker skin types​​. 6 , 7 Furthermore, the patient's feedback and satisfaction with the treatment, as well as the absence of significant downtime, contribute positively to the overall treatment experience​​.…”