TLDR L-Cystine and L-Cystine with Kera-Diet® safely improved hair and nail quality in healthy women.
In a 2019 randomized, placebo-controlled clinical trial involving 60 healthy female subjects with acute telogen effluvium and brittle nail syndrome, researchers found that L-Cystine (CYS) alone or in combination with a natural keratin hydrolysate (Kera-Diet® or KDC) significantly improved hair density, hair and nail brightness, and nail growth rate over a 3-month period. The study reported a 56.9% and 58.9% increase in hair brightness for the CYS and KDC groups, respectively, and a nail growth rate of 0.21 ± 0.02 mm/14 days for the KDC group after 90 days. The treatments were well tolerated with no adverse reactions, and a self-assessment questionnaire indicated a 90% global satisfaction rate for the combination treatment. The study concluded that both L-Cystine and the combination with Kera-Diet® are effective and safe for improving hair and nail parameters in healthy females, offering a beneficial dietary approach for managing symptoms of acute telogen effluvium and brittle nail syndrome.
1 citations
,
March 2022 in “Journal of Cosmetic Dermatology” Cosmetic foam product reduces hair loss and increases hair density in men.
June 2020 in “International journal of research in dermatology” Taking choline-stabilized orthosilicic acid orally significantly improved hair, skin, and nail health without side effects.
8 citations
,
March 2020 in “Dermatologic Therapy” The new hair loss treatment kit was safe and improved hair growth without any adverse effects.
2 citations
,
November 2019 in “Journal of Cosmetics, Dermatological Sciences and Applications”
1 citations
,
January 2018 in “Journal of cosmetology & trichology” Hair loss lotion with specific ingredients effectively improves hair growth and thickness safely.
January 2018 in “Surgical and Cosmetic Dermatology” The document's conclusion cannot be provided because the text is not in a processable format.
1 citations
,
May 2017 in “Asian journal of medical sciences” The dietary supplement significantly improved skin, nails, and hair in older adults.
1 citations
,
January 2017 in “Ancient science of life/Ancient Science of Life” Vatika Enriched Coconut Hair Oil is safe and more effective than regular coconut oil for reducing hair fall and dandruff.
11 citations
,
January 2014 in “The Scientific World Journal” Cynatine HNS improves hair and nail quality in 90 days.
1 citations
,
January 2013 in “Journal of Cosmetics, Dermatological Sciences and Applications” The document concludes that a new treatment for a type of hair loss called telogen effluvium was tested and shows promise.
9 citations
,
June 2011 in “International Journal of Cosmetic Science” The new mild shampoo helped prevent hair loss in the subjects.