Whether your hair is stick straight or full of corkscrew curls, you have your genes to thank.

But how exactly genes control the shape of hair has been debated. Scientists once thought that the curliness of hair was determined by the individual hair shafts, but have since discovered that the shape of the follicle (the part of the skin that grows the hair) determines both the shape of the hair and the angle it grows in with respect to the scalp. Curly hair is shaped like an elongated oval and grows at a sharp angle.

Curly hair tends to be much drier than straight hair because it is easier for the oils secreted from the scalp to travel down the shaft of a straight hair than a curly one (this is why curly hair often turns into frizzy hair).

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DevaCurl Light Defining Gel Soft Hold No-Crunch (2-Sizes Available)
DevaCurl No-Poo® Original Zero Lather Conditioning Cleanser
DevaCurl One Condition Original Formula
DevaCurl One Condition Decadence Ultra Moisturizing Cream Conditioner
DevaCurl Ultra Defining Gel Strong Hold No-Crunch Styler (2-Sizes Available)
DevaCurl B'Leave-In Curl Boost & Volumizer (2-Sizes Available)
DevaCurl SuperCream Coconut-Infused Definer
Truss Professional Curly Twist
DevaCurl Low-Poo Original Mild Lather Cleanser (2-Sizes Available)
Truss Professional Curly Shampoo
Truss Professional Curly Fix
Truss Professional Curly Conditioner
DevaCurl Arc Angel Maximum Hold No-Crunch Styler (2-Sizes Available)
MoroccanOil Curl Defining Cream
Truss Professional Curly Light
Truss Professional Beach Waves
DevaCurl No-Poo® Decadence
DevaCurl Heaven In Hair Moisturizing Deep Conditioner (2-Sizes Available)
DevaCurl Styling Cream Touchable Curl Definer
DevaCurl Beautiful Mess Curl Sculpting Pomade
DevaCurl Supreme Defining Gel
DevaCurl The Curl Maker Curl Boosting Spray Gel
Redken Curvaceous Wind Up Curly & Wavy Hair Reactivating Spray
Redken Curvaceous Full Swirl Curly and Wavy Hair Cream Serum
DevaCurl Melt Into Moisture Matcha Butter Conditioning Mask
Ouidad Curl Recovery™ Melt Down Extreme Repair Mask
Ouidad Curl Immersion™ Hi-Defining Custard
DevaCurl High-Shine Multi-Benefit Oil
MoroccanOil Curl Control Mousse
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Kenra Curl Defining Cream 5
DevaCurl Low-Poo Delight for Wavy Hair (2-Sizes Available)
DevaCurl Wave Maker Touchable Texture Whip
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Ouidad Curl Quencher Moisturizing Shampoo
DevaCurl Frizz-Fighting Volumizing Foam Lightweight Body Booster
DevaCurl Flexible Hold Hairspray Touchable Finishing Styler
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Alfaparf Semi Di Lino Curls Enhancing Conditioner
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