Pls Kindly Contact Us In The First Time If You Meet Any Questions, We Will Solve For You Perfectly In Shortest Time,Ensure Bringing You A Very Happy Shopping Experience Here! Simply Hair Straightener---2 In 1 Function: Ceramic Iron Straightener + Detangling Brush Temperature Setting Guide: 1. For Thicker And Curls Hair,Choose 410-446Fahrenheit Degree. 2. For Common Hair,Choose 374-410Fahrenheit Degree. 3. For Thin And Soft Hair,Choose 338-392Fahrenheit Degree. Recommend To Choose Highest Temperature At First,Then Reduce The Temp Lever According To Your Hair Quality Centigrade To Fahrenheit Convert: Press ""+""""-""At Same Time Notice:Long Press 3 Seconds To Turn On/Off. Instructions: 1: Please Keep Hair Dry And Neatly Groomed Before Using. 2: Insert The Plug Into Proper The Socket 3: Turn It On And Adjust The Temperature,Use When The Temperature Reach What You Want 4: During Use,One Hand Pulls Hair End And Comb With Straighter 5: If You Want Straight Hair Last Longer,Please Use Hair Styling Lotion And Softener Lotion And Wash Clean Before Hair Straightening 6: It Should Not Clip Too Much Hair,If You Want To Clip More,Please Slow Down The Speed In The Process Of Drawing 7: This Product Will Be Turned Off By An Hour Automatically,Turn It On If Want To Use Again