October 2024 in “UNESP Institutional Repository (São Paulo State University)” Straightening and dyeing damage hair structure.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal cream effectively smooths and straightens hair safely.
3 citations
,
January 2009 in “Sen'i Gakkaishi” Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.
1 citations
,
June 2021 in “Preprints.org” Hair relaxers and straighteners can be toxic to skin cells.
18 citations
,
July 2015 in “Journal of cosmetic dermatology” Straightening and coloring hair, especially with sodium hydroxide, greatly increases protein loss.
8 citations
,
October 2014 in “Journal of analytical toxicology.” Chemical hair straightening significantly reduces detectable drug levels in hair.
52 citations
,
February 2005 in “Biopolymers” Chemical hair straightening changes hair proteins and mostly fixes broken bonds.
September 2023 in “International Journal of Cosmetic Science” The shampoo improves hair conditioning without using silicone.
December 2000 in “Kirk-Othmer Encyclopedia of Chemical Technology” Hair care products are regulated, with shampoos, conditioners, dyes, and styling products designed for cleaning, enhancing, and maintaining hair.
September 2020 in “Benha Journal of Applied Sciences” Protein hair straighteners damage the hair more than hair dyes.
7 citations
,
May 2021 in “Applied sciences” Proteins like BSA and keratin can effectively style hair and protect it, offering eco-friendly alternatives to chemical products.
29 citations
,
August 2011 in “PubMed” Polymeric pretreatments can significantly reduce hair breakage and damage from hot flat irons.
3 citations
,
May 2009 in “International Journal of Cosmetic Science” Relaxer treatments damage African–American hair, with commercial products causing more harm than lab-made solutions.
3 citations
,
January 2004 in “Sen i Gakkaishi” DTDG in hair treatments reduces damage and preserves hair structure.
4 citations
,
June 2022 in “Journal of cleaner production” New eco-friendly method strengthens and sets hair using light and causes less damage.
2 citations
,
July 2013 in “Acervo Digital da Universidade Estadual Paulista (Universidade Estadual Paulista)” The shampoo effectively defines and models curls while reducing frizz and volume.
October 2015 in “Cosmetic Dermatology” Hair styling products and tools help improve hair's look and manageability but can damage hair if used incorrectly.
2 citations
,
February 2016 in “Journal of sol-gel science and technology” A small molecule can strengthen fine hair, making it more resistant and natural-feeling.
December 2025 in “Biopolymers” Heat worsens damage in chemically treated hair, especially bleached and straightened hair.
August 2025 in “Clinical Toxicology” Hair-straightening products with glyoxylic acid may cause kidney damage.
16 citations
,
October 2003 in “Journal of applied polymer science” 2-iminothiorane hydrochloride improves hair waving permanence without damage.
July 2023 in “Nature Reviews Chemistry” A new method strengthens hair without using harmful chemicals.
3 citations
,
January 2002 in “Springer eBooks” Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.
54 citations
,
September 2000 in “Archives of dermatology” A hair-straightening product caused widespread hair loss and scalp injuries, mainly affecting African American women.
5 citations
,
June 2019 in “British Journal of Dermatology” Chemical hair straightening may be linked to a type of permanent hair loss.
August 2024 in “Cosmetics” K18® and Olaplex® both effectively repair bleached hair, improving its strength, smoothness, and overall health.
150 citations
,
July 2001 in “Clinics in dermatology” Proper haircare and communication with doctors are key to managing hair loss and avoiding damage.
Modern hair styling products don't repair hair but improve its surface and stability.
18 citations
,
January 2008 in “Sen'i Gakkaishi” Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.
Hair styling products can cause skin irritation.