1000ml 12% Pure Keratin Hair Straightening Treatment for Frizzy and Damaged Hair How to Use: Wash hair twice with purifying shampoo on chemically-treated hair, and three times on untreated hair. Blow dry hair completely until 100% dry. Shake the bottle well. Pour approximately 23 oz of Pure Keratin treatment into a bowl. Apply the treatment to hair using a brush in 1/2-inch sections. Comb through each section to ensure full saturation. Wear gloves during application. Cover hair with a cap. For chemically-treated or damaged hair, allow the treatment to process for 20 minutes, then blow dry hair to 100% dry. For resistant or coarse hair, allow 30 minutes of processing time, then blow dry completely. Using a heat-resistant comb, divide hair into 4 sections. Use a flat iron set at 450F (230C). Begin at the nape of the neck, working in 1/8-inch sections. Pass the iron slowly from root to ends 57 times, or 710 times for extremely curly or coarse hair, to seal the keratin into the hair shaft. For chemically-treated or damaged hair, reduce the temperature to 430F. Wait 72 hours before washing hair. After this period, use sulfate-free shampoo and conditioner. Package Includes: 1 x 1000ml Pure Keratin Treatment