17 citations,
April 2016 in “Journal of Investigative Dermatology” KB2115 (eprotirome) can safely extend the hair growth phase without damaging cells or changing hair color.
31 citations,
February 2019 in “International Journal of Cosmetic Science” Caffeine applied to the scalp can protect hair follicles from UV damage.
15 citations,
July 2019 in “Journal of Investigative Dermatology” CBD can either reduce inflammation and not affect hair growth at low levels or inhibit hair growth at high levels.
14 citations,
September 2015 in “Expert Opinion on Therapeutic Targets” The conclusion is that while oral contraceptive pills are effective for PCOS-related high androgen levels, new treatments with fewer side effects are needed.
9 citations,
July 2020 in “Experimental Dermatology” Topical L-thyroxine may help with wound healing and hair growth but should be used short-term due to potential risks.