Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Jul 8;9:9834. doi: 10.1038/s41598-019-46370-x

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Comparison of virgin hair, hair washed by the immersion method, and hair washed by the rubbing method. (a) SEM and AFM images of washed hairs. (b) Noncovalently bound hair lipid composition after washing with an SLES solution. The concentration of lipids extracted from washed hair was divided by that from virgin hair. The error bar amplitude indicates standard deviation. The lines above the bar graph denote a significant difference (n = 6) calculated using Student’s t-test. NS – not significant, *P < 0.05, and **P < 0.01. Graphs for the lipids in group A: 1. Myristic acid; 2. Palmitic acid; 3. Stearic acid; 4. Oleic acid; 5. Cholesterol. Graphs for the lipids in group B: 6. Squalene; 7. Myristyl palmitate; 8. Palmityl palmitate; 9. Stearyl palmitate. (c) Spatial verification of lipid loss. SEM images of the ultramicrotomed hair coated with Pt (left), optical microscopy images and the corresponding in situ Raman image (right). A bright color means a high Raman intensity, i.e., a high density of wax esters.