Here's a quick tutorial to get beach waves using flat iron. Take diagonal sections and slide the iron down at a faster speed. You can them comb through your hair for a tousled beach waves effect. Head over the the blog where I've shared 8 best irons for beach waves such as deep wavers, curling irons, curling wands, and flat irons. They'll give you different beach waves like mermaid wave, loose beach waves, S-shaped waves, tousled & undone beach wave looks. Read the blog for more.