Product Overview Work miracles on weak, chemically lightened blonde hair with Pureology Perfect 4 Platinum Miracle Filler 145ml. With 15x more Keravis, a protein-based fortifying complex, this reparative lotion can help your hair recover up to 78% of the strength lost during chemical lightening. Perfect for daily use on weak or damaged blonde hair, this blow dry lotion can help protect your locks from further stress and damage, and provides increased strengthening over time. Directions for Use Apply to clean, damp hair, spreading evenly. Blow dry and style your hair as usual.