Iles Formula Finishing Serum Haute Performance in Beauty: NA. Iles Formula Finishing Serum Haute Performance in Beauty: NA. Achieve flawless hair with the Finishing Serum Haute Performance. Perfect for all ages + hair types, this cult product is a protective styling formula (heated tools + UV + Color Fade + Humidity). It delivers an organic memory and spun silk suppleness without weighing the hair down.. Cruelty-free Free of sulfates, silicones, parabens, peptides, and bond builders. Delivers an organic memory and the most expensive looking lustre to the hair. This formula has the power to transform dry, brittle hair to sumptuous silk just by blow drying it in to wet hair. 6.8 fl oz. Apply evenly to mid-length and ends before styling. Heat activate on wet hair for phenomenal results.. When applied methodically to all sections, this serum has the power to make thin hair feel and look organically thicker, and calms down thick, coarse hair.. Apply daily to dry hair to refresh protection + prevent frizz.. IMUF-WU3. IFFS300-68.