1. Apply to dry hair, saturating from roots to ends. Hair should be damp, but not too damp.
2. Leave to act for 10 minutes. Do not rinse.
3. Apply Nº.3 HAIR PERFECTOR directly over Nº.0 and leave to act for an additional 10 minutes.
4. Rinse thoroughly.
5. Clean with Shampoo No. 4 and finish with Conditioner No.5
Oils, Benzophenones and related compounds, Butoxyethanol, Butylated hydroxyanisole (BHA), Butylated hydroxytulolene (BHT) under 0.1%, Carbon Black or Black 2, Coal Tar, Ethanolamines, Formaldehyde and Formaldehyde Releasing Agents , Hydroquinone, Lead and Lead Acetate, Mercury + Mercury Compounds (Thimerisol), Methoxyethanol, Methyl Cellosolve, Methylchloroisothiazolinone and Methylisothiazolinone, Mineral Oil, Nanomaterials (restrictions for specific nanomaterials only), Oxybenzone, Parabens, Petrolatum and Parrafin (USP grade only), Phenoxyethanol under 1%, Phthalates, Plastic Microbeads, Polyacrylamide & Acrylamide, Resorcinol, Retinyl Palmitate, Styrene, Sulfates, Talc (no detection of asbestos), Toluene, Triclosan and Triclocarban, Undisclosed Synthetic Fragrance (under 1% and formulated without Acetaldehyde, Acetone , Acetonitrile, Benzalkonium chloride, BPA, EDTA, Methylene chloride, PTFE, PFOA), 1, 4, Dioxane (ingredients must comply with impurity thresholds), Octinoxate, PFAS compounds, Nitromusks and Polycyclic Musks, Ethoxylated Ingredients (including PEGS or polyethylene glycol must meet contamination limits for 1'4 Dioxane and ethylene oxide), Cyclic Silicones, EDTA and derivatives (allowed if no technical substitute under 0.2%)