How to use on hair extentions and fibre. 1) Shake the bottle before opening2) Spray. Section hair. Keeping nozzle 30 cm away from your hair, spray from mid-length to ends avoiding roots.3) Blend product into hair with fingertips/scarf/towel from mid-length to ends.4) Style, you can use any styling tools (including heated tools) How to use on Straight,Wavy,Curly and Chemical treated hair.1) Spray. Shake the bottle before opening. Section hair. Keeping nozzle 30cm away from your hair, spray from roots to ends.2) Massage product thoroughly into hair with fingertips to ensure that your roots are covered.3) Brush through to remove excess residue and style as desired.You can use any styling tools (including heated tools)