Julia StilesTHE LOOK Long layers HOW-TO Apply one pump of Kerastase Serum Oleo-Relax to wet hair. Blow dry hair with a round brush from root to end. Use a flat iron to smooth ends. INSIDER TRICK When selecting a part, use the highest point of the eyebrow and go up from there. BUY ONLINE NOW Kerastase Serum Oleo-Relax; $34; fredsegalbeauty.com.com.