Details:

Features:
25mm friction-free ceramic and tourmaline plates
Gentle, variable far-infrared heat
Variable heat settings from 80°C up to 230°C for all hair types
Advanced Surround Heat Technology for longer-lasting curls, flicks and waves
Professional length power cord with 360° swivel cord
Dual voltage for worldwide usage

Directions for use:
Wash off your hair with a shampoo and conditioner. Blow-dry it after wash. Use a smoothing and conditioning shampoo when you have frizzy thick hair. For thin hair, you should opt for the volumizing products. Give your hair a towel dry after wash and follow with the blow dry. When drying the hair, do it from the roots to the tips. Comb your hair well and detangle unmanageable hairs. This makes the first step of hair straightening.
The next step is to apply a heat protection spray. 
While making the hair ready for straightening, divide the hair into layers, strands and sections. This would enable you focusing each part of the hair equally.
Set the iron into correct temperature for your hair type. 
Leave an inch from the root and start straightening. Straighten one layer of hair at a time. This way, repeat the method for each of the strands and layers.