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Cosmetic routines emerge from bathhouses to hairstyling, reserved for the upper echelon of society.

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The belief becomes widespread that grooming and adornments separated humans from all other animals. Babylonian courts contain multiple bathrooms complete with clean, running water; soap made from animal fats boiled with ashes is stored in clay jars.

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In Aleppo, Syria, soap is made by combining olive oil, sweet bay oil, water and lye, then heated, left to cool, cut, and left to age for seven months.

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European Crusaders encounter caravans along the Silk Road filled with Aleppo soap, bring home large quantities, and start discovering ways to create it.

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In Europe a link made between hygience and black death increasing interest among all classes in grooming

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Early colonial traders in India discover hair and body massage, called champo, and introduce “champing” to Europe – and the origin of the word “shampoo”

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Berlin chemist, Hans Schwarzkopf, opens a drugstore dedicated to perfume and focuses his efforts on hair care products, including a popular, water-soluble, dry shampoo that despite the convenience, still causes dulling, alkaline reactions.

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The New York Times outlines “simple rules” on How to Shampoo the Hair. It claims that hair is best shampooed at night, following thorough combing and brushing, and singeing split ends. Castile soap is applied with a stiff brush and rinsed four times every month to six weeks.

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Kasey Hebert invents the first commercial shampoo. Ads for Canthrox Shampoo

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2021 - Hundreds of thousands of Shampoo Brands!!

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2021 - Hundreds of thousands of Shampoo Brands!!

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From one commercial brand in 1914 to uncountable number of brands - but how many do we really need?

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Here's the thing: There's no such thing as THE BEST shampoo brand. Sorry, but every brand has good and, uh, not-so-good products, and what works for your dry hair definitely doesn't work for my oily hair. That said, there are basically eight billion shampoos on the market right now and sifting through all of 'em to find your match is a massive undertaking. Lucky for you, I went ahead and did the hard work for you by testing and trying a sh*t ton of shampoos to figure out which ones are actually worth your $$$. Ahead, 10 of the best shampoo brands the world has to offer (along with my favorite formulas).

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Ruby Buddemeyer Beauty Editor Ruby is the beauty editor at Cosmopolitan, where she covers beauty across print and digital.

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I've Tried, Like, 8 Billion Shampoo Brands-These Are The Best Ones

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Here's the thing: There's no such thing as THE BEST shampoo brand. Sorry, but every brand has good and, uh, not-so-good products, and what works for your dry hair definitely doesn't work for my oily hair. That said, there are basically eight billion shampoos on the market right now and sifting through all of 'em to find your match is a massive undertaking.

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Can you list the different needs people have for shampoo?

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Can you list the different needs people have for shampoo?

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According to Medicinenet.com humans have 4 general hair types and 12-20 major hair disorders - so do we need hundreds of thousands of products to choose froom?

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Hair Disorders: Finding the Root of the Problem

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Hair loss, or alopecia, can be associated with a wide variety of conditions, from genetic to autoimmune to infectious to environmental. Can you identify and distinguish the most common forms of hair loss?