entire scalp, weird though i didnt unattach last night and now its not itching as much. But this is the second tape in a row with itching issues so im thinking it might be something else or maybe i was unlucky with these two tapes im not sure? Well id love to use a weaker tape if i was to unattach more often but doesnt that mean way less security. I know someone who attaches daily and their piece came off during surfing lol. Anyway thanks for replies