Selection of laser wavelength for tattoo removal: 532nm and 1064nm

In modern medical beauty technology, laser tattoo removal is a widely used method that uses laser beams to destroy tattoo pigments in the skin and gradually remove tattoos. In this process, choosing the appropriate wavelength is crucial, and 532nm and 1064nm are two commonly used laser wavelengths.

1. Wavelength introduction:

1064nm wavelength:

The 1064nm wavelength simultaneously absorbs three color bases: water, hemoglobin, and melanin. Collagen fibers and fatty tissue in the dermis can also absorb light of this wavelength.

Able to penetrate deeper into the skin and have better penetration into dark and black tattoos.

It has good adaptability to different skin colors and can effectively deal with deep ink particles.

1064 with short pulse width-Q-switched/picosecond: remove freckles

Pigment treatment endpoint: slight grayish white, deepening to reddish, or subcutaneous bleeding or spotting. ~Compared with 532nm, some epidermal spots are more suitable for treatment with 1064nm laser (reduces adverse reactions such as blisters and blood blisters, and has a short recovery period)

1064 with long pulse width-Fotona 4D: skin rejuvenation/facial youthfulness, (hair removal)

Q-switching: The role of large light spot and energy (1064):

1. White porcelain doll: whiten/remove yellowishness/improve skin color - reduce the number/density of melanin particles

2. Dot matrix mode (honeycomb): skin rejuvenation increases collagen content in the dermis and improves pigmentation/chloasma

3. For difficult-to-treat true-epidermal mixed pigmented diseases (chloasma/post-inflammatory pigmentation), 1064nm has unique advantages: large spot/low energy is recommended: large spot and low energy Q-switched laser can selectively Destroy melanosomes in black cells, minimize damage to surrounding skin tissue and basement membrane, and avoid postoperative inflammatory pigmentation.

532nm wavelength:

The 532nm wavelength has good absorption of hemoglobin and melanin, which can solve blood vessel problems and skin pigment problems.

It has better absorption ability for red, orange and yellow tattoo pigments.

Lasers of this wavelength are suitable for treating lighter and warmer-toned tattoos.

Has a higher energy absorption rate but may be less effective when treating dark or black tattoos.

Treatment end point: off-white, sugar-like (white frost reaction), light energy focuses on the superficial surface of the skin, 532 reacts very violently with the skin, do not turn on the energy too high, as too high energy can easily cause blisters and scars.

Selection of spot size, energy and frequency:

532nm wavelength:

Spot size: Usually a smaller spot size is chosen to improve accuracy.

Energy selection: Medium energy level to avoid unnecessary damage to the skin.

Frequency: Moderate frequency to allow skin to fully recover.

1064nm wavelength:

Spot Size: Larger spots can be selected to cover a larger tattoo area.

Energy Options: High energy levels to ensure effective breakup of deep pigments.

Frequency: Lower frequency to avoid excessive thermal damage to surrounding tissue.