Redensyl, saw palmetto, and biotin with platelet-rich plasma is a better treatment for hair loss than Procapil with platelet-rich plasma.
Some TikTok hair loss remedies like rosemary oil, onion juice, and garlic gel show promise, but more research is needed and they might delay proper treatment.
July 2020 in “International journal of biology sciences” Coconut oil mixed with egg yolk and vitamin E may improve rabbit hair growth more than other plant oils.
August 2019 in “Journal of The American Academy of Dermatology” 5% minoxidil foam effectively regrows hair in women, with postmenopausal women seeing the most improvement.
April 2017 in “Journal of Investigative Dermatology” SIG-1451 could be a promising new treatment for atopic dermatitis.
January 2016 in “Hair therapy & transplantation” Hair UpTM effectively and safely promotes hair regrowth, especially in minors.
December 2015 in “Dermatologic Therapy” Zinc sulfate solution is more effective than tea lotion for treating acne rosacea.
August 2015 in “Europe PMC (PubMed Central)” 
October 2014 in “Cancer Research” A new topical treatment may prevent hair loss from cancer therapy by adjusting cell death processes in hair follicles.
March 2005 in “Journal of the American Academy of Dermatology” Bexarotene 1% topical gel helped some patients with alopecia areata regrow hair.