Hello there! The Hydrate Shampoo and Conditioner are 9 fl. Oz. We hope this helps!

is this the same formula that cosmetologists use?

Hi Rick, There is only one formula for Hydrate Shampoo. No matter what size container it is packaged in it is the same formula in each and the same formula that cosmetologists use. There is also Hydrate Conditioner for more hydration as well. Thank you for your question.

Hello there Happy; thanks for asking about Pureology Hydrate Moisturizing Shampoo and Conditioner Set. We are happy to provide you with the complete ingredient list. We hope this helps! Hydrate Shampoo Aqua/Water/Eau, Sodium Cocoyl Isethionate, Disodium Laureth, Sulfosuccinate, Sodium Lauryl Sulfoacetate, Sodium Lauroyl, Sarcosinat, Glycol Distearate, Cocamidopropyl Betaine, Glycereth-26, Decyl Glucoside, Coconut Acid, Sodium Hydroxide, Sodium Isethionate, Parfum/Fragrance, Citric Acid, Ppg-5-Ceteth-20, Divinyldimethicone/Dimethicone Copolymer, Sodium Chloride, Polyquaternium-7, Amodimethicone, Coco-Betaine, Polyquaternium-10, Propylene Glycol, Peg-55 Propylene Glycol Oleate, Linalool, Carbomer, C11-15 Pareth-7, Benzoic Acid, Laureth-9, Butylene Glycol, Glycerin, Limonene, Geraniol, Tocopherol, Benzyl Alcohol, Trideceth-12, Salicylic Acid, Sodium Benzoate, Helianthus Annuus Seed Extract/Sunflower Seed Extract, Magnesium Nitrate, C12-13 Pareth-23, C12-13 Pareth-3, Benzophenone-4, Tetrasodium Edta, Phenoxyethanol, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Wheat Amino Acids, Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol, Ci 60730/Ext. Violet 2, Methylchloroisothiazolinone, Hydrolyzed Soy Protein, Sorbic Acid, Magnesium Chloride, Methylisothiazolinone, Potassium Sorbate, Disodium Edta, Helianthus Annuus Seed Oil/Sunflower Seed Oil, Ascorbic Acid, Camellia Sinensis Leaf Extract, Rosa Centifolia Flower Extract, Aloe Barbadensis Leaf Extract. Hydrate Conditioner Aqua/Water/Eau, Cetearyl Alcohol, Amodimethicone, Behentrimonium Chloride, Cetyl Esters, Isopropyl Alcohol, Mentha Arvensis Leaf Oil, Phenoxyethanol, Parfum/Fragrance, Trideceth-6, Helianthus Annuus Seed Oil/Sunflower Seed Oil, Glycine Soja Oil/Soybean Oil, Tocopherol, Panthenol, Butyrospermum Parkii Butter/Shea Butter, Cetrimonium Chloride, Butylene Glycol Menthol, Simmondsia Chinensis Butter/Jojoba Butter, Limonene, Helianthus Annuus Seed Extract/Sunflower Seed Extract, Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol, Chlorhexidine Dihydrochloride, Camellia Sinensis Leaf Extract, Rosmarinus Officinalis Leaf Extract/Rosemary Leaf Extract, Salvia Officinalis, Leaf Extract/Sage Leaf Extract, Hydrolyzed Soy Protein, Benzophenone-4, Linalool, Pentylene Glycol, Wheat Amino Acids, Sodium Chloride, Mentha Piperita Extract/Peppermint Extract, Ascorbic Acid, Potassium Sorbate, Disodium EDTA.

Why is there pictures shown of people hair falling out using this product purology ??

I can only give you my experience ,it stopped doing that when I started using it. Everyone's hair is different. There may be other reasons for their hair problems.