Analog Dog has a fatpack of hair as a group gift for the Hair SL group, near their gachas. I am not sure for how long. Join the group (The sign is right beside the fatpack), then while wearing the tag, hit the fatpack button. It was a little tricky for me to get it to work, I think mostly due to how busy it was on the sim, and the way SL was working for me today. I ended up left clicking it and then pressing touch in the pie menu.
Finds of the Day
Hair - Analog Dog - Isadora in Dark Browns - Instore Group Gift (Free to Join)
Eyes - Soedara - Deep Soul Eyes in Dark Brown - Free SL Marketplace Gift
Dress - Earth and Sky Designs - Sadie Pintuck Dress in Coffee - Free Dove Free Item