This invention belongs to the field of biomedical materials and
skin / hair repair technology, specifically a recombinant collagen freeze-dried composition targeting
hair follicle functional sites, its preparation method, and its application. The composition includes recombinant human collagen, selected from recombinant
type III collagen containing a Wnt-
binding domain, recombinant type XVII collagen containing an NC16
A domain, or a combination thereof; a freeze-
drying protectant composed of
trehalose and
mannitol in a
mass ratio of 1:2 to 2:1; and a buffer
system, a
phosphate buffer with a pH of 6.5-7.5 and a concentration of 5-20 mM. This invention provides precise
hair follicle targeting and
efficacy far exceeding that of ordinary collagen. It is effective for androgenetic alopecia, telogen effluvium, and diffuse
thinning hair loss. It can be used for individuals with
scalp micro-damage and sensitive scalps, simultaneously improving the
scalp microenvironment and preventing
hair loss from the root. Furthermore, its long-term stable effects have been verified over multiple time points.