After Receiving a Japanese Straightening you must follow these rules for three days:
Don't wash your hair for three days (eg. process on saturday wash on tuesday morning).
Don't get your hair wet, if it does get wet dry it straight.
If you sweat, dry it straight.
No pins.
No clips.
No ponytails.
No hair placed behind the ears.
After the third day:
Use TR Safe Shampoo (eg. Crede ER FT or Peter Louis TR shampoo and conditioner or Yuko Kokoro G Shampoo and treament....)
If you go swimming protect your hair with a protection oil like phytoplage Sun protection oil or Peter Louis conditioner.