Suggested that the laser light in the case of focus, the power is too strong, d o not use strong light to illuminate the skin! Avoid the use of flammable objects or gases in order to avoid causing a fire or explosion. If you could not be reached within 5 days the order may be cancelled by the system automatically so your attention for our message is highly apprecaited during this special time. Order may be cancelled due to insufficient of your information. Buyers from the following countries.Missing item or get wrong item or damaged items, or the item seams can not work well, please keep all the items in original condition, make all the items together with packing, then take some photos of them and send us the photos by message box. (2) How we will react? (sometimes you may be requested to return the incorrect item). (3) Valid time for returning. We promise to achieve your 100% satisfaction. Thank you so much for your kindness and understanding.