January 2015 in “British journal of medicine and medical research” A woman with severe hair loss due to systemic sclerosis regrew her hair in 4 months using a combination of treatments.
January 2013 in “프로그램북(구 초록집)” Hair perms or treatments seem safe to use up to 3 to 4 times during pregnancy.
Hair loss can happen after severe H1N1 flu but usually grows back in 4 months.
40 citations,
June 2009 in “Journal of Cutaneous Pathology” AGA patients have fewer hairs and smaller follicles; T:V ratio above 4:1 may indicate AGA.
21 citations,
September 2013 in “Journal of circadian rhythms” Intense exercise at night can delay the body's internal clock gene expression by 2 to 4 hours.
17 citations,
January 1997 in “Cell and Tissue Research” Scientists developed a method to grow human fetal skin and digits in a lab for 3-4 weeks, which could help study skin features and understand genetic interactions in tissue formation.
11 citations,
July 2008 in “Facial Plastic Surgery Clinics of North America” Hair restoration surgery redistributes existing hair to achieve a natural look, with visible regrowth in 3-4 months and rare complications, mostly aesthetic.
3 citations,
February 2014 in “Atlas of the Oral and Maxillofacial Surgery Clinics” New facelift techniques lead to less scarring and faster recovery, with high patient satisfaction after 4 years.
1 citations,
August 2023 in “Indian Journal of Plastic Surgery/Indian journal of plastic surgery” The Indian Journal of Plastic Surgery has achieved a Journal Impact Factor of 0.8 and improved its Scopus CiteScore to 1.4.
May 2014 in “Transfusion and Apheresis Science” PRP is a safe natural treatment that improves skin by reducing wrinkles and enhancing texture for up to 4 months.
January 2008 in “Chinese Journal of Spectroscopy Laboratory” Cysteine formation on hair indicates damage, best detected at pH 4.5.
January 1953 in “The Lancet” Cortisone may help hair regrow by altering the local environment, with regrowth starting 3-4 weeks after treatment, but its use is not widely recommended.
42 citations,
December 2014 in “Clinical, cosmetic and investigational dermatology” Nonablative radiofrequency treatments, especially microneedle and fractional types, can improve acne scars by 25%–75% after 3-4 sessions, with full results in 3 months and some side effects.
30 citations,
July 2004 in “Fertility and Sterility” Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.
27 citations,
June 2017 in “International Journal of Dermatology” The study suggests that acne keloidalis nuchae is linked to conditions like pseudofolliculitis barbae, scalp infections, metabolic syndrome, and is more common in males with an average onset age of 25.4 years.
18 citations,
March 2016 in “Cosmetics” Telogen Effluvium is a condition causing excessive hair loss due to stress, illness, drugs, or hormonal changes, and can be treated with specific products or naturally resolves after 3-4 years.
16 citations,
May 2015 in “Tissue Engineering Part C-methods” A two-step method was created in 2015 to make more cells that help with hair growth, but they need to be combined with other cells for 4 days to actually form new hair.
12 citations,
January 2003 in “Dermatology Online Journal” A new treatment for hair loss was tested and most participants saw their hair loss stop within 2-8 weeks, with up to 50% more hair after 4 months, and no side effects.
3 citations,
April 2020 in “Facial Plastic Surgery Clinics of North America” Beard hair transplantation is generally satisfying, requires 250-800 grafts, uses FUE to avoid scars, needs careful planning, has some risks, and hair regrowth starts after 4-6 months.
1 citations,
July 2019 in “Farmatsevtychnyĭ zhurnal” The optimal gel-mask for hair loss contains 15% nettle juice, 0.5% carbopol ultrez 10 and sodium alginate, 0.1% potassium sorbate, and 0.4% PEG-40 hydrogenated castor oil.
PRP therapy is effective and safe for treating hair loss, increasing hair follicles and reducing hair loss after at least 4 treatments.
September 2017 in “Indian Journal of Plastic Surgery” Garg and Garg created an affordable, easy-to-use training program for hair restoration surgery using everyday items, which can teach a technician the basics in 3-4 weeks with two hours of daily practice.
June 2013 in “Aesthetic Surgery Journal” The book is a detailed guide on aesthetic surgery with useful content and visuals, but lacks new techniques and a CD, rated 4 out of 5.
99 citations,
September 2007 in “The American journal of pathology” Chemotherapy damages hair follicles, causing hair loss and other cellular changes.
83 citations,
April 1992 in “Journal of Biological Chemistry” Four-amino acid part makes enzyme sensitive to finasteride.
58 citations,
June 2000 in “The Journal of Steroid Biochemistry and Molecular Biology” Different types of androgens bind differently to two receptors, AR1 and AR2, in Atlantic croaker's brain and ovarian tissues, suggesting these receptors may control different androgen actions in fish.
42 citations,
May 2003 in “Mini-reviews in Medicinal Chemistry” New steroidal compounds could be effective for treating conditions related to 5α-reductase enzyme activity.
36 citations,
October 2009 in “Journal of Investigative Dermatology” Dihydrotestosterone can be made from dehydroepiandrosterone in skin cells without needing testosterone.
33 citations,
June 2007 in “International Journal of Pharmaceutics” The conclusion is that measuring how drugs partition into artificial sebum is important for predicting their delivery into hair and sebaceous follicles, and it provides better information than traditional methods.
28 citations,
May 1986 in “Clinics in endocrinology and metabolism” New compounds may soon be tested to treat excessive hair growth in women.