The eyebrow (sometimes called the "pre-head") typically sits on top of your headline in a smaller font.
It's job is to call out your reader.
You want to get their attention by calling out the type of person they are or the things they like.
Obviously it needs to do with what you're selling.
Type of Person Examples:
Attention College Students!
Are You Recently Retired?
Calling All Course Creators Who Need a Sales Page!
Things They Like Examples:
Read This if You Are Truly Serious About Losing Weight!
Attention NBA Fans!
Want to slash strokes from your golf game almost overnight?
Think about your ideal customer.
What can you call out about them to get their attention immediately at the top of your sales page?
Use this to lead into your headline.