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THE ROOTS BLOG

Hair science,
decoded.

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ScalpMoisture & Hydration

Oily Roots, Dry Ends: Why Both Happen and What Actually Helps

Greasy at the scalp, straw at the tips. It looks like a contradiction, but these are two separate conditions on one strand, and treating them as one is why nothing seems to work.

6 min
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Damage & Repair

Split Ends: What Causes Them and What Actually Helps

A split end is a crack that ran the wrong way through a strand. Labs can now make them on demand, which has shown where they start, and why no product can close one.

6 min
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CleansersDamage & Repair

Hard Water and Your Hair: What It Does and What Actually Helps

Hard water gets blamed for almost everything that goes wrong with hair. The minerals are real, the evidence on damage is messier than you'd expect, and the state of your hair may matter more than the state of your water.

6 min
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Routines & Methods

Wash Day, Step by Step: A Full Hair Routine Walkthrough

Every individual step of wash day has a reason behind it. Laid out end to end, in order, is where the reasoning actually becomes useful.

8 min
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Routines & MethodsCleansers

Clarifying and Buildup: When and How to Reset Your Hair

Hair that won't absorb product, feels coated no matter what you use, or has stopped responding to a routine that used to work has one of three specific things stuck to it.

6 min
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Reading LabelsOils & Emollients

Fatty Alcohols in Hair Care: Why They're Not Actually Drying

An ingredient scanner sees the word 'alcohol' and flags the bottle. The molecule it flagged is closer to a wax than to the alcohol that dries hair out.

6 min
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Moisture & HydrationDamage & Repair

Panthenol (Pro-Vitamin B5) for Hair: What It Actually Does

Panthenol gets filed under 'moisturizing ingredient' and left there. Newer research on how it actually interacts with hair protein tells a more specific story.

6 min
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Routines & Methods

Building a Hair Care Routine: Order of Operations and How to Simplify Yours

Six products in the right order do more than ten in the wrong one. Here's the sequence that actually works, and why it matters more than the products themselves.

7 min
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Routines & MethodsMoisture & Hydration

Deep Conditioning: How It Actually Works and How Often You Need It

A deep conditioner left on for two minutes and one left on for twenty aren't doing the same job. The difference is molecular weight, not marketing.

7 min
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Damage & RepairRoutines & Methods

Heat Protection: What Actually Works Before Hot Tools

A flat iron at 200°C is operating well past the temperature where hair protein starts to denature. Heat protectant doesn't lower that temperature. Here's what it actually does instead.

7 min
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Evidence-based articles on porosity, ingredients, and what your hair actually needs, not trends.

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