Is it true, that if you blow dry your hair and the cold button, the style will last longer?

Yes the cold air will set the style. Like if you wanted big bangs ( Back in the day) you would hit it with the hot first, then the cold to set it

Is it true, that if you blow dry your hair and the cold button, the style will last longer?

yes

Is it true, that if you blow dry your hair and the cold button, the style will last longer?

well, that's what happens to me whenever i dry my hair. heat just gives it a softer texture, but no figure

Is it true, that if you blow dry your hair and the cold button, the style will last longer?

Yes. It helps set product in hair.

Is it true, that if you blow dry your hair and the cold button, the style will last longer?

no it's better not to blow dry your hair