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Glossary Raman spectroscopy

technique using laser light to analyze molecular vibrations

Raman spectroscopy is a technique used to study the vibrational, rotational, and other low-frequency modes in a system. It involves shining a laser on a sample and analyzing the scattered light to gain information about the molecular composition and structure. This method is valuable in various fields, including chemistry, biology, and materials science, for identifying substances and understanding molecular interactions.

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Research

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research Analysis of structural change in keratin fibers resulting from chemical treatments using Raman spectroscopy

52 citations , February 2005 in “Biopolymers”

In this study, chemical treatments during permanent hair straightening were found to randomize proteins in the cortex, aiding in the reconnection of disulfide bonds during oxidation.

research Analysis of structural changes in permanent waved human hair using Raman spectroscopy

45 citations , December 2006 in “Biopolymers”

This study found that permanent waving treatment induces structural changes in the cortex proteins of white human hair, significantly reducing its tensile strength without altering the S-S band intensity.

Measuring Changes in Chemistry, Composition, and Molecular Structure Within Hair Fibers by Infrared and Raman Spectroscopic Imaging

research Measuring changes in chemistry, composition, and molecular structure within hair fibers by infrared and Raman spectroscopic imaging

42 citations , January 2011 in “Journal of Biomedical Optics”

This study demonstrates that spatially resolved IR and Raman imaging can effectively reveal the molecular structure and composition of untreated human hair, providing insights into its chemistry and structural integrity.

research Reduction mechanism of L‐cysteine on keratin fibers using microspectrophotometry and Raman spectroscopy

29 citations , August 2005 in “Biopolymers”

In this study, researchers found that L-cysteine interacted electrostatically with anionic ions on the surface of keratin fibers in human hair, reducing the rate of disulfide bond disconnection at pH 9.0.

research Raman spectroscopy and electronic microscopy structural studies of Caucasian and Afro human hair

25 citations , May 2019 in “Heliyon”

This study found that excessive heat caused the most significant structural changes in hair from Caucasian and Afro samples, especially when combined with other treatments like bleaching and straightening.

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community 4 Months on Roman 3-in-1 (Topical) — Crown Progress? Switch to Oral or Dutasteride?

4 upvotes 8 months ago

The user has been using Roman 3-in-1 topical treatment (finasteride 0.3%, minoxidil 6%, tretinoin 0.025%) and a 0.25 mm dermaroller for four months to address crown thinning. They are seeking advice on whether to continue with the current regimen, switch to oral finasteride, or try dutasteride for better results.

community Cheaper alternative to Roman spray?

in Product 2 upvotes 2 years ago

A user has had great results with a spray containing 6% minoxidil, 0.03% finasteride, and 0.25% tretinoin from Roman but is seeking cheaper alternatives with the same ingredients. They are looking for suggestions for more affordable sites or pharmacies.

community Stop supporting Keeps and Roman, they’re price gouging you

in Finasteride/Dutasteride 360 upvotes 3 years ago

The post discusses the high cost of hair loss treatments from companies like Keeps and Roman, and suggests cheaper alternatives like GoodRx. Users share their experiences with different providers, costs, and methods of obtaining finasteride, a common hair loss treatment.

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Hair Transplant
Dr. Raman SharmaKarol Bāgh, Delhi · IN

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