1) More effective to clean pigments compared with traditional laser cure,the picosecond will focus more than 20 times energy.can shatter the pigment to bitty powder and be easy to metabolism. YOUTUBE VIDEO LINK: https://youtu.be/IPn2qS0UiKk 2) Faster speed to clean pigments compared with traditional laser cure.picosecond.so it can reach a expected effect in a very short time.meanwhile the picosecond is no harmful to skin tissue and no nursing period. 3) No re-black risk: under the fast and strong assault of the picosecond.it cause overwhelming damage to melanin.and that will avoid the possibility to re-back 4) Clean the pigments meanwhile activate skin repair mechanism at the same time when picosecond laser shatter the melanin,the shock wave will come into the deep skin and activate skin repair mechanism.and promote collages metabolism. 5.Suitable for a wide range of customers,long term effect is more obvious,more durable and safe.