Instructions For Conducting A Strand Test
Perform a strand test every time you colour your hair, this will help to show the end results. Results can vary, perms, relaxers, previous colours and the sun will affect the end colour.
Cut a small section from the roots of your hair (around 1cm) use the darkest or greyest part of your hair.
Completely coat the hair strand with the mixture from your allergy test. Check after 15 minutes.
Tie at the cut end.
Keep checking until the desired colour is achieved for up to 30 minutes. Use this time as a guide for your personal development time. Do not exceeded 30 minutes.