For wet hair:
Divide washed, towel dried hair in 8 zones.
Rub 1-2 pumps on your hands (depending on the quality and structure of your hair) and apply it in each zone. Starting at the tips (the most stressed part) to the root.
Leave it in for 2 minutes to allow it to penetrate the cuticle before you blow dry or styled your hair.
For dry hair:
Rub a small amount on the hands and apply to dry hair (in lengths and tips) to smooth the hair surface and give shine.
In all cases: Leave it in and do not rinse.