What is hair thickness? Learn how to identify fine, medium, or thick hair strands and discover how hair thickness influences product selection, styling, and hair care routines.

Hair thickness influences how your hair behaves, including its ability to hold styles, retain moisture, and respond to products. Fine hair may become weighed down more easily, while coarse hair often requires richer formulas to help support hydration and manageability. Understanding your hair thickness can help you build a routine that works with your hair&apos;s natural structure and needs.Hair thickness refers to the width of each strand:<ul><li>Fine: Thinner than a sewing thread; barely felt between fingers.</li><li>Medium: About the thickness of a sewing thread; noticeable between fingers.</li><li>Coarse: Thicker than a sewing thread; strong and easily felt between fingers.</li></ul>

What is my hair thickness?

What is scalp moisture? Learn how to identify a dry, balanced, or oily scalp and discover how scalp moisture influences comfort, hair health, and product selection.

<ul><li id="isPasted">Dry: Scalp feels tight or uncomfortable; usually washes every 3&#x2013;4+ days</li><li>Balanced: Scalp feels normal a day after washing</li><li>Oily: Hair feels oily quickly; often needs daily washing</li></ul>

What is my scalp moisture?

Function of Beauty

Great hair starts with understanding its structure. Explore hair biology articles that explain how hair type, texture, moisture, and damage influence your hair's unique needs.

Hair Biology

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Straight Hair: What is Type 1 Hair?

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Culry Hair: What Is Type 3 Hair?

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Coily Hair: What is Type 4 Hair?

Hair Types Explained: How to Identify Your Hair Type and Build the Right Routine

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