What is the 755nm & 1064nm dual-wavelength Alexandrite laser?

The 755nm & 1064nm Dual-Wavelength Alexandrite Laser is an integrated dual-wavelength laser device capable of rapidly and significantly improving various skin concerns. It is suitable for hair removal, rosacea treatment, wrinkle reduction, skin brightening, rejuvenation, and pigmentation removal in both fair and dark-skinned individuals. This equipment employs a dual-laser system, featuring dual handpieces and dual laser rods, enabling independent selection of either wavelength for treatment. Compared to short pulses, long-pulse lasers deliver energy in a sustained, slower pulse form achieved through extended duration, typically within the millisecond range. This principle enables deeper tissue penetration, making it highly suitable for hair removal and treating deeper vascularlesions. The mechanism involves converting light energy into heat to disrupt target structures such as hair follicles or blood vessels.

●755nm laser: Exhibits exceptionally high melanin absorption with shallow penetration depth (epidermis to superficial dermis). Suitable for targeting epidermal pigmentation (freckles, sunspots) and superficial follicular melanin, commonly employed for hair removal on fair skin and superficial pigmentation treatment.

●1064nm laser: Penetrates deeper (reaching the deep dermis and even subcutaneous fat), exhibiting greater sensitivity to haemoglobin and deep melanin. Suitable for hair removal on darker skin tones, deep pigmentation (melasma, blue-black tattoos), abnormal blood vessels (telangiectasia), as well as stimulating collagen regeneration (skin rejuvenation) and fat metabolism (body contouring).

The core operational principle is: based on the concept of selective photothermal action, employing a dual-wavelength configuration with long-pulse design to precisely target therapeutic sites (melanin, haemoglobin, adipose tissue, etc.), achieving therapeutic outcomes without damaging surrounding tissues.

Fundamental Basis: Selective photothermal action constitutes the core operational principle underlying all aesthetic medical lasers.

·Laser energy is preferentially absorbed by target tissues (such as melanin in hair follicles or haemoglobin in blood vessels), rather than surrounding skin cells.

·Absorbed energy is converted into heat, precisely ‘destroy’ or ‘stimulate’ the target tissue to achieve therapeutic objectives (such as hair removal, redness reduction, or skin rejuvenation).

The core difference from single-wavelength lasers

The dual-wavelength Alexandrite laser at 755nm and 1064nm precisely targets three major skin concerns: pigmentation, hair, and vascular issues. Its synergistic dual-wavelength technology adapts to varying lesion depths and skin types!

I. Pigmented Skin Lesions (Core Treatment Focus)

This represents the most common application for the device, with dual wavelengths targeting epidermal and dermal pigmentation respectively to prevent missed treatment or skin damage.

● Epidermal Pigmentation Issues: Freckles (hereditary pigmentation; 755nm precisely targets melanin, achieving noticeable lightening after a single treatment) Sunspots/Actinic Keratoses (UV-induced; dual wavelengths jointly clear superficial pigmentation, reducing recurrence) Age Spots (seborrhoeic keratoses; addresses thickened pigmented lesions on the skin surface through gentle exfoliation + pigment breakdown) café-au-lait spots (congenital pigmented patches; 1064nm penetrates to superficial dermis for gradual pigmentation reduction).

● Dermal pigmentation concerns: Nevus of Ota (deep dermal pigmentation around eyes and cheekbones; 1064nm penetrates dermis to shatter pigment granules for bodily metabolism), Nevus of Ota (mid-dermal pigmentation on temples and cheeks, dual-wavelength alternating treatment for precision and safety), Nevus of Ito (dermal pigmentation on shoulders, back, and upper arms, similar treatment logic to Nevus of Ota, suitable for extensive lesions).

● Acquired pigmentation issues: Post-inflammatory hyperpigmentation (dark marks from acne, trauma, or allergies; dual wavelengths regulate pigment metabolism while avoiding skin irritation that exacerbates pigmentation).

II. Full-Body Laser Hair Removal (Highly Adaptable Applications)

The dual-wavelength combination overcomes limitations of single wavelengths regarding ‘skin tone + hair type’, broadening suitability.

● Applicable Areas: Hair across all body regions, including underarms, upper lip, sideburns, limbs (arms, calves), torso (chest hair, abdominal hair, bikini line), back, etc.

● Suitable Hair & Skin Types: Fine/vellus hair (755nm targets melanin sensitivity, capturing trace pigments in fine hair); coarse/terbile hair (1064nm penetrates deeply to disrupt follicle roots and hair growth cycles); fair skin (755nm delivers higher efficacy); medium-dark skin (1064nm minimises melanin stimulation, preventing burns and post-inflammatory hyperpigmentation). III. Vascular and Additional Therapeutic Applications

The 1064nm wavelength exhibits selective absorption by haemoglobin, aiding in the improvement of mild vascular concerns:

● Telangiectasia: Facial redness (superficial capillaries on the nose wings and cheeks; 1064nm gently seals abnormal vessels), superficial varicose veins on legs (mild symptoms requiring multiple sessions).

●Pimples, acne, red acne marks: Residual inflammatory redness after acne subsides. Dual-wavelength synergy reduces vascular dilation and inflammatory remnants, accelerating fading. 

● Dull/uneven complexion: Assists in brightening skin tone and refining texture by breaking down minor excess pigmentation and stimulating dermal collagen regeneration.

The 755nm wavelength exhibits high absorption efficiency for melanin, making it ideal for precisely targeting pigmented lesions and hair removal on fair skin tones.

The 1064nm wavelength penetrates deeper, effectively treating dermal pigmentation and vascular lesions while causing less irritation to darker skin types, thereby reducing the risk of post-inflammatory hyperpigmentation.

Dual-wavelength switching allows flexible adjustment based on skin condition and lesion depth, offering enhanced adaptability and more comprehensive results.