September 2017 in “Journal of Investigative Dermatology” Hair care products used for 4 weeks made hair smoother.
January 1992 in “Proceedings of the New Zealand Society of Animal Production” Ferret hair growth starts between 0 and 4 days after melatonin treatment, with cell growth peaking in the hair germ and declining as the hair matures.
May 1963 in “American journal of obstetrics and gynecology” Injecting 2 ml of TEEV every 4 weeks is better because it has the same benefits but fewer side effects.
24 citations,
May 1963 in “Archives of Dermatology” Most new moms had their hair grow back within 4-6 months after childbirth, and hair loss is likely due to hormonal changes.
15 citations,
January 2000 in “Japanese Heart Journal” A man developed heart problems after using a baldness treatment for 4 months, suggesting that people with heart issues should avoid this treatment.
6 citations,
January 2012 in “Hair transplant forum international” Best solution for storing hair grafts is saline with ATP at 4 degrees Celsius, but no definitive best method was confirmed.
1 citations,
December 2022 in “Pathogens” A stray cat with severe scabies recovered after 4 weeks of treatment.
1 citations,
April 2018 in “Медицинский совет” Minoxidil effectively treats early-stage androgenic alopecia with visible results in 4-6 months and minimal side effects.
October 2023 in “Jurnal Ilmu Kesehatan Hewan” The kitten's skin condition improved significantly after 4 weeks of treatment.
August 2018 in “Journal of the American Academy of Dermatology” A new cosmetic cream reduced facial redness and skin temperature after 4 weeks of use.
4 citations,
September 2013 in “Journal of Plastic Surgery and Hand Surgery” A girl with a rare syndrome had successful hair loss treatment with no relapse after 4 years.
May 2015 in “Cancer research” After chemotherapy for early breast cancer, 33.4% of patients had long-term significant hair loss, with some hair regrowth over time, but treatments for hair loss were largely ineffective.
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.
25 citations,
December 1973 in “Biochemical Journal” Guinea-pig hair and follicle proteins are mostly similar, but follicles have more group 2 proteins and fewer group 3 and 4 proteins.
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.