LIZZ Instant Deblate Serum-in- RefrigeratorOil Of Redken. Oil-softened hair serum with anti-frizz properties. The Dismissive Frizz collection reinvents its formulas and presents this leave-in oil serum that helps control frizz in hair. medi / thick. Its formula protects against humidity and heat, removing unwanted volume and adding shine. Furthermore, its high anti-frizz properties will keep hair free even in high humidity environments, providing extra control over the most unruly and unruly hair. Sulfate-free.