Not a peptide, but I have seen this on other beauty forums....might be worth a shot.
Hyaluronic Acid Serum….
Hanheal hair filler - once every two weeks, for the first two months, then once a month for the next time, then every three months for maintenance.
Start off with hyaluronic acid and use as much as you can.
Then massage once you have it on and use the dermaroller, back-and-forth, 10 times. Do it sideways and lengthways, and keep putting on the hyaluronic acid in the hair.
Push down on the dermaroller as hard as you can when doing it.
Then get the Handheal hair filler and combine one bottle of liquid and one bottle of powder together, then mix it together.
Get a dropper, then start applying to hair follicles, then dermaroll it again.
Once done, apply castor oil to the hair and dermaroll it again.