... 3-7 daysDirection for use:1. Before use, please will pack a apart, in ventilated place placed ... a moment, fully disperse residual faint scent.2. Please according to teeth and tooth assembly, to do any ... Laid simple, level off)3. Children under 3, please in adults, accompanied by use.4. If need to ... to sleep on it.NOTE: It can be readily used just by unpacked it.Why us:1. High quality products, good price, ...