The last time I/the world used foam hair rollers was probably right around the time that blue eye shadow was still a definite fashion do and Jessie Spano was tweaking on caffeine pills. But like crop tops and Doc Martens, what was retro yesterday is hot today. To whit, women in beauty product obsessed Korea are all over sponge rollers right now. And when summer temps are soaring, getting gorgeous hair without wilting under a curling iron or blow dryer starts to sound pretty fab. Here s how to get the curly, wavy or voluminous look you re after with foam rollers.