Phase Theory Beauty Co. · Follicle Biology

Inside the
Follicle

A cross-section of the scalp at the microscopic level. Select any highlighted structure to explore what it does — and how scalp care and strand care each play a role.

Explore the Follicle

Select any highlighted point to explore the structure and learn what it does.

0 of 9 structures explored

EPIDERMISDERMISHYPODERMISHair ShaftCuticleSebaceous GlandScalp EpidermisFollicle SheathArrector Pili MuscleHair MatrixDermal PapillaCapillary Network200 μmCross-section

Select a Structure

Select any highlighted point on the diagram — or choose a structure from the labels — to explore the anatomy and its ingredient connection.

One Living System

How the parts
work together.

A hair follicle is a living biological system made up of multiple structures working together. The dermal papilla, matrix, surrounding tissue, sebaceous gland and blood supply each play different roles, while the hair fiber that emerges above the scalp requires a different kind of care.

Understanding that distinction helps explain why scalp care and strand care are related — but not the same.

A Closer Look at the Scalp Environment

Buildup vs. a
cleansed scalp.

Product residue, excess oil and debris can accumulate around the follicular opening. Regular cleansing helps remove surface buildup and supports a clean, comfortable scalp environment.

Maintaining the scalp environment is one part of healthy hair care; hair growth itself is governed by complex biological processes beneath the skin.

Conceptual illustration — not to scale.

With Buildup

WITH BUILDUPExcess oil& residueProductresidueBuildup atthe openingBUILDUP AT THE SURFACE

Residue, oil and debris can collect around the follicular opening

Cleansed

CLEANSEDClearporeClean, opencanalComfortableenvironmentCLEANSED · COMFORTABLE SCALP

Regular cleansing helps remove surface buildup for a clean, comfortable scalp

Indicator⬤ With Buildup⬤ Cleansed

The Role of Cleansing

Sulfate-free cleansing helps remove surface buildup, excess oil and product residue — supporting a clean, comfortable scalp environment and preparing the hair for conditioning and moisture. Hair growth itself is governed by complex biological processes beneath the skin.

9

Annotated Structures

From cuticle to capillary — every layer mapped.

~70μm

Hair Shaft Diameter

Visible only at 400× magnification, yet the foundation of your entire look.

100%

Ingredient Connected

Every structure connects to the cosmetic ingredients that care for the scalp and hair.

From Follicle Science to Formula Science

From follicle science
to formula science.

Explore the ingredients used across Baby Hair® formulas and learn how they support cleansing, conditioning, moisture, scalp care, strength and length retention.

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Phase Theory Beauty Co.™

Baby Hair® · Beards & Bourbon™ · Velvet Diamonds · Phase Theory Skincare · Phase Theory Wellness

The science of beautiful hair.

📞 Phone

(713) 254-0732

📍 Address

15534 W Hardy Rd Suite 175
Houston, Texas 77060

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Member of the Society of Cosmetic Chemists — committed to scientific excellence in formulation.

Results Disclaimer: Individual results may vary. Hair and scalp conditions differ by person. Product outcomes are not guaranteed.

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. Phase Theory Beauty Co.™ products are cosmetic formulations and are not intended to diagnose, treat, cure, or prevent any disease or medical condition.

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