June 2011 in “Journal of medicine and life science” Hizkia fusiforme seaweed extract can help promote hair growth.
39 citations
,
December 2013 in “Phytotherapy Research” Safflower (Carthamus tinctorius) extract helps hair grow and could be used in hair products.
February 2019 in “PubMed” The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.
45 citations
,
March 2001 in “Journal of Investigative Dermatology” A new protein, mK6irs, is found in specific hair layers and may help understand hair growth and diseases.
September 2016 in “Journal of dermatological science” The conclusion is that the variation in hair thinness in patients is mostly due to the amount of underdeveloped hairs, and treatments that thicken fine hairs might work for those with mild to severe conditions.
4 citations
,
January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.
29 citations
,
March 2012 in “Journal of Experimental Biology” Tarantula feet likely have chemoreceptors, not silk-producing parts.
January 2001 in “Biomedical Research” THH and PAD type III appear together early in hair growth, but deiminated THH appears later, suggesting another factor is involved.
Hair feels different when touched and rubs together in various ways.
59 citations
,
February 2019 in “BMC Genomics” Hair length in rabbits is linked to differences in lipid metabolism and cell death.
12 citations
,
September 1990 in “The Anatomical Record” Human anagen hair follicles have unique carbohydrate patterns during keratinization.
March 2023 in “Asian Journal of Beauty and Cosmetology” HX109 herbal extract helps hair grow by boosting cell growth and reducing cell death.
May 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Telocytes, cells with long extensions, are vital for hair growth because they produce Wnt signals, which are necessary for hair follicle regeneration.
15 citations
,
December 1972 in “Journal of Investigative Dermatology” 24 citations
,
January 1989 Human papilla cells from hair follicles show unique growth behaviors but don't induce hair growth in vitro.
4 citations
,
January 2011 in “Der Pharmacia Lettre” Hibiscus flower extract slowed down hair growth in rats.
2 citations
,
August 2020 in “Natural Product Communications” A mix of Platycladus orientalis leaf extract and alpha-terpineol helps mice grow hair by increasing growth factors and cell growth.
February 2026 in “The Plant Journal” ADF8 and ADF11 help root hairs grow by responding to hormones and environmental signals.
48 citations
,
January 2002 in “Journal of Structural Biology” Trichocyte filaments have a low-density core and may include proteins for hair structure.
January 2014 in “Journal of the Korean Society of Design Culture” The study confirmed that changes in hair structure in women with hair loss conditions matched what is taught in beauty college trichology courses.
14 citations
,
January 1998 in “Dermatology” Polythelia pilosa is a type of extra breast tissue with hair and should be classified as such.
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzymes Tet1, Tet2, and Tet3 are important for the development of hair follicles and determining hair shape by controlling hair keratin genes.
4 citations
,
August 2023 in “Nature Communications” Mouse zigzag hair bends form due to a 3-day cycle of changes in hair progenitors and their environment.
34 citations
,
July 1958 in “Biochimica et Biophysica Acta” 11 citations
,
January 2016 in “Biointerphases” The hair's outermost surface has multiple layers of lipids and proteins.
April 2024 in “Jurnal Agroindustri Halal/Jurnal agroindustri halal” The hair tonic with the highest seaweed extract content showed the best hair growth results.
2 citations
,
July 1994 in “Journal of Dermatological Science” Grafted human scalp samples on mice can produce human hair, useful for studying hair genetics.
72 citations
,
July 1984 in “Journal of Investigative Dermatology”
57 citations
,
November 1998 in “Wound Repair and Regeneration” Hair papilla cells can create and regenerate hair bulbs under the right conditions.
2 citations
,
February 2019 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” Tufted folliculitis is common in patients with folliculitis decalvans.