putting weed crumbs in hair good?

my bsf told me a long ass time ago that when ur done packing a joint or a bowl the weed crumbs u have on ur fingers should be rubbed in the hair to help… she was hella vague abt what it helped with but i’ve been doing ever since then. does is actually have an impact on my hair? i’ve tried searching this before but i’ve found nothing 😭 probably because it’s some shit she heard from someone who randomly claimed that