“This serum can visibly increase hair density up to 50 percent while reducing loss from combing and washing by up to 76 percent in four months,” says JAS. This is thanks to several unique ingredients not found in many other hair growth serums — namely, tea tree and rosemary, which have been shown to help inhibit the production of dihydrotestosterone (DHT, a hormone that plays a role in hair loss), and nicotiana benthamiana, an Australian plant whose proteins have been shown to increase the density of hair roots.
Buy It: Just A Sip Hair Serum, $29, https://www.amazon.com/Just-A-Sip-Hair-Serum/dp/B097TTYC2C/ref=sr_1_3?crid=1M5BOBM6G5EQT&dchild=1&keywords=just+a+sip+hair+serum&qid=1632403419&sprefix=just+a+sip+hair+%2Caps%2C160&sr=8-3
