December 2025 in “Biopolymers” Heat worsens damage in chemically treated hair, especially bleached and straightened hair.
1 citations
,
January 1998 in “Cosmetics and toiletries” Both amodimethicone and dimethicone copolyol amine are effective hair conditioners.
10 citations
,
September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
26 citations
,
January 1964 in “Experimental Cell Research” July 2022 in “Siriraj Medical Bulletin” The conditioner effectively strengthens and smooths hair, offering a natural alternative.
October 2025 in “International Journal of Cosmetic Science” Hair properties vary by ethnicity and environment, affecting surface charge and particle deposition.
19 citations
,
September 2005 in “International Journal of Dermatology” African-American hair's curl pattern significantly affects its strength and elasticity.
18 citations
,
September 1972 in “British Journal of Pharmacology” PCPA induces hypersexual behavior in male rats regardless of age or castration status.
3 citations
,
August 2008 in “PubMed” Repeated digital perming with sodium thioglycolate lotion significantly damages hair protein and structure.
April 2019 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” Hair straightening at pH 1.0 improves alignment but weakens hair more than pH 2.0.
48 citations
,
January 2011 in “Neuropharmacology” Isolation stress in rats reduces brain enzyme levels, affecting dopamine function.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
1 citations
,
May 2022 in “Reproductive Endocrinology” Conditioned media from glial cell cultures improved uterine contractions in older rats.
8 citations
,
May 2020 in “International journal of biological macromolecules” Certain treatments can increase protein binding to natural hair but are less effective on permed hair.
2 citations
,
December 1994 in “International Journal of Cosmetic Science” Polymer complexation makes hyaluronic acid stick to hair better, enhancing its moisturizing effects.
3 citations
,
June 2019 in “Journal of cosmetic dermatology” Lower pH straighteners change hair more but weaken it.
Applying conditioner in the middle of a perm process reduces hair damage.
February 2023 in “Journal of medical primatology” Pair housing reduces stress behaviors and health issues in quarantined rhesus macaques.
10 citations
,
January 1994 Hair can be straightened using different chemicals, not just strong alkali.
April 2024 in “JMR. Journal of molecular recognition/Journal of molecular recognition” Hydrophilic carbon dots cause one protein to clump more and prevent another from clumping.
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.
December 2025 in “Universal library of medical and health sciences.”
December 2023 in “Data in Brief” Curly hair's strength and flexibility vary with moisture and temperature.
1 citations
,
January 2003 in “Benjamins eBooks” Confinement in farrowing crates doesn't increase chronic stress in sows, but hair cortisol measurements may not reliably indicate stress due to hair growth variations.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.
215 citations
,
November 2000 in “Journal of Investigative Dermatology” The system allows precise control of gene expression in mouse skin, useful for studying skin biology.
298 citations
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January 2014 in “BioMed Research International” Stem cell-derived conditioned medium shows promise for treating various medical conditions but requires standardized production and further validation.
February 2022 in “DOAJ (DOAJ: Directory of Open Access Journals)” Retinoic acid reduces cell damage from oxidative stress.
61 citations
,
January 2013 in “International Journal of Biological Macromolecules” Combining DHT and EDC improves the strength and stability of PADM scaffolds for tissue engineering.