Design Blueprint: Shampoo Dilution
Year: 2026
Type: article
Abstract: Design blueprint derived from the source paper (DOI 10.5281/zenodo.24121347): This study examines a practical question in everyday hygiene by explicit arithmetic from stated assumptions. Neat use applied surfactant at 15% at the point of contact but averaged 4.1% over the head after spreading losses. Dilution to the threshold occurred at a ratio of 1:11.5, and the recommended working ratio of 1:4 delivered 3.0% at the hair, a margin of 150% above threshold. Annual product consumption fell from 1248 mL neat to 374 mL diluted, saving USD 10.48 per person per year at the stated price, while one diluted wash at the working ratio outperformed, on spread coverage, the first o Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.
Author: Aldred, William Alexander
Language: English
Subfield: Physical and Theoretical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7225794118
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