November 2024 in “International Journal of Cosmetic Science” The study investigates the potential of botanical extracts to improve scalp conditions by reducing oxidative stress, which affects hair and scalp health. Using both chemical and biological antioxidant mechanisms, 10 botanical extracts were tested for their ability to combat reactive oxygen species (ROS). The study employed ORAC testing, a Nrf-2 cell assay, and a 3D human keratinocyte model to evaluate antioxidant activity. A 4-week consumer study with 56 participants using a leave-on treatment containing a botanical extract showed a reduction in oxidized lipids on the scalp. The results indicate that incorporating botanicals with antioxidant properties into hair and scalp care products can enhance scalp health.
38 citations,
June 2018 in “Archives of Toxicology” Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.
16 citations,
September 2018 in “Scientific reports” Scientists created keratinocyte cell lines from human hair that can differentiate similarly to normal skin cells, offering a new way to study skin biology and diseases.
July 2023 in “International Journal of Molecular Sciences” N,N-Dimethylglycine Sodium Salt helps reduce skin inflammation and improves skin cell growth and healing.
3 citations,
June 2017 in “Journal of Biomaterials Applications” Keratin extract from human hair was found to promote hair growth in mice.