The effect and safety of picosecond spot removal is better than that of laser spot removal, and the two have different mechanisms, indications, advantages and disadvantages.
1. Mechanism of action: laser spot removal mainly uses pigmented spots to absorb laser energy and destroys local pigmentation of pigmented spots. Picosecond spot removal is to use picosecond level laser with faster speed and stronger energy to crush pigment more finely, and can stimulate the generation of collagen fibers and elastic fibers, which can help to rejuvenate white, tighten and enhance skin quality, repair scars and lighten wrinkles. Therefore, picosecond spot removal has more cosmetic effects in addition to spot removal.
2. Indications: Laser spot removal is mainly used for the treatment of freckles, sun spots, chloasma, age spots and other pigmented skin diseases. Picosecond spot removal can be used for removing spots, purifying and rejuvenating skin, removing fine lines, removing tattoo pigment and so on, which has more efficacy.
3. Advantages: laser spot removal directly and selectively acts on melanin, and produces no or only minor damage to the surrounding normal tissues. Picosecond spot removal can destroy pigmentation more precisely, with short action time, fast treatment, small thermal damage and shorter recovery period. Moreover, there is no invasive wound and dermal damage after picosecond spot removal treatment, which greatly reduces the damage to the skin, so the safety is better.
4. Disadvantages: After laser spot removal stops treatment, there may be different degrees of color return and pigmentation phenomenon. The effect and safety of picosecond spot removal is better, but the treatment cost is more expensive compared with laser spot removal.
To summarize, it is suggested that different patients should choose the suitable treatment method under the guidance of physicians in order to get better treatment effect.