The principle of laser hair removal is that lasers with special wavelengths penetrate the epidermis and dermis to reach the diseased melanin tissue. Lasers with different wavelengths can selectively absorb melanin such as gray-black, deep blue, green, brown, bright red, and deep brown inside the skin. Because the needles used during semi-permanent eyebrow tattooing penetrate the skin too deeply, melanin particles accumulate under the capillaries, causing damage to the capillaries during the hair removal process, leading to bleeding. In the case of bleeding, a gauze pad should be applied to compress the blood vessels, and large, low-energy light spots should be used with a relatively sparse density, avoiding repeated direct照射 to the same location.

In addition, laser hair removal requires several treatments, usually 3-5 times, with an interval of 3 months. After the treatment process is completed, a significant improvement can be seen. The effect of laser hair removal is determined by the color, such as gray-black or bright red eyebrows, the effect will be relatively good. If it is other colors such as pale yellow or deep blue, the effect will not be very good.

It is possible to perform laser hair removal with picosecond lasers, but the specific situation requires preoperative consultation and treatment. Some very dark colors may not be completely removed. Since picosecond lasers are used less frequently in regular hospitals, it is recommended that patients consult the plastic surgery department of a local top-grade hospital before treatment. Generally, laser spot array removal is considered, and some may require 3-5 treatments to be completely removed. Due to the different inking agents used in semi-permanent eyebrow tattooing, different surgical conditions, and different skin conditions, the frequency of eyebrow washing also varies. After eyebrow washing, some can be completely removed, but some may have residual hyperpigmentation issues.

Under normal circumstances, laser hair removal is generally not prone to scarring, but due to individual differences and the variation of semi-permanent eyebrow inking agents, scars may occur. Semi-permanent eyebrow tattooing is a unique form of tattooing, where tattoo masters apply inking agents to the skin surface in accordance with the manner of external skin injury, creating a special pattern design. Semi-permanent eyebrow tattooing is designed to meet different needs, creating different eyebrow shapes, adhering to different inking agents, such as deep black or coffee color, to produce the desired pattern design. The commonly used inking agents are granular particles of color, which will preferentially select lasers that can absorb special wavelengths of light. When using a suitable laser, such as a Q-switched laser or a picosecond laser, the inking agents can be爆破ed off, and the爆破ed inking agents can be resolved by the body’s tissue cells, with some falling off in the form of scabs.