HAIR CARE DESK · UNITED STATESPRACTICAL CALLEDITORIAL CHECK · 2026-08-26
STRAND REPORT

Claims, context, and what the bottle leaves out.

DECISION DESK

Clean an oily scalp without drying already-dry lengths

Choose a shampoo and placement strategy that cleans roots without sacrificing color or fiber comfort.

10 SOURCE REFERENCESOWNED USE TEST NOT EXECUTEDU.S. ROUTINE CONTEXT

THE DESK'S CALL

The headline.

Our call: cleanse the scalp, spare the lengths
02

ON THE RECORD

What keeps the headline honest.

This is an editorial conclusion from the stated context. It is not a claimed product trial, diagnosis, or universal ranking.

Decision change

Separates scalp cleansing from length care and makes frequency, placement, and rinse behavior part of the comparison.

Evidence boundary

pH, cleansing strength, deposits, friction, breakage, color retention, and scalp measures are rarely provided with comparable methods.

03

What could overturn the headline.

THE COUNTER-CASE

  • A shampoo strong enough for roots can be unnecessarily harsh on lengths.
  • Persistent scalp inflammation is not just an oil-control issue.

STILL UNREPORTED

  • pH, cleansing strength, deposits, friction, breakage, color retention, and scalp measures are rarely provided with comparable methods.
04

BUSINESS DESK

Commercial disclosure

This report contains no affiliate link or paid product placement. We do not turn manufacturer statements into owned findings, and we do not imply a product was used when no dated hands-on protocol exists.

EVIDENCE TRAIL

What the sources carry — and what the desk decides.

The linked sources support product status, labeling, or professional boundaries. They do not prove the editorial winner and they do not stand in for an owned test.

EDITORIAL JUDGMENT

Our call: cleanse the scalp, spare the lengths

A reasoned course of action; not a product result measured by the source.
BOUNDARY OF THE CALL

A shampoo strong enough for roots can be unnecessarily harsh on lengths.

pH, cleansing strength, deposits, friction, breakage, color retention, and scalp measures are rarely provided with comparable methods.

Primary and professional sources in the record

  1. Is It a Cosmetic, a Drug, or Both? (Or Is It Soap?)U.S. Food and Drug Administration
  2. Cosmetics Labeling ClaimsU.S. Food and Drug Administration
  3. Summary of Cosmetics Labeling RequirementsU.S. Food and Drug Administration
  4. 21 CFR Part 701 — Cosmetic LabelingOffice of the Federal Register / eCFR
  5. 21 CFR Part 740 — Cosmetic Product Warning StatementsOffice of the Federal Register / eCFR
  6. FDA Adverse Event Monitoring System (AEMS)U.S. Food and Drug Administration
  7. Hair cosmetics: an overviewMaria Fernanda Reis Gavazzoni Dias
  8. The shampoo pH can affect the hair: myth or reality?Dias et al.
  9. Qu’est-ce que je dois faire pour arrêter d’avoir les cheveux gras ?u/Yoyoshinwa — Reddit r/AskMeuf
  10. How is it possible that my roots are oily but the rest is dry?u/LIA_XXX_ — Reddit r/HaircareScience
Data and test conditions still required
Product function and category

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Ingredient list for the current version

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Body area and directions

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Amount, contact time, and frequency

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Starting hair-fiber condition

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Performance under realistic use

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Sensory feel over time

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Tolerance protocol and stop criteria

Document against the current U.S. product version; keep missing or non-comparable information visibly open.

Balance scalp cleansing and lengths

Define and retain the conditions, date, material, and outcome before presenting any owned observation.

Record sensory feel after use

Define and retain the conditions, date, material, and outcome before presenting any owned observation.

Assess general tolerance with stop rules

Define and retain the conditions, date, material, and outcome before presenting any owned observation.