John Stamos' hair is iconic: Styling it is a Ronco Showtime ... "Honestly, if I put a little water in (my hair), I've got stuff in here from the '90s that reactivates. So that's part of it ...
The 'Full House' star and 'Ghost' star both joined the long-running soap in January 1982 and departed in April 1984 ...
John Stamos and Dave Coulier have been good friends ever since their time as Full House sitcom staples in the '80s and '90s, so when Coulier ... "Couldn't even cut your hair off for your friend.