Lyophilized peptides are typically stable at room temperature for several weeks or longer, so if they will be used within weeks or months, this type of storage is usually adequate
You will not see visible new length yet, because new hairs entering anagen still need time to grow through the skin surface
But the story becomes much more complicated when you look closely at the evidence
Involvement of ERK1/2 pathway in BPC-157-induced cell proliferation, migration, and tube formation To explore whether the ERK1/2, JNK, or p38 pathway was involved in BPC-157-induced cell proliferation, migration, and tube formation, PD98059 (ERK1/2 inhibitor), SP600125 (JNK inhibitor), and SB203580 (p38 inhibitor) were used
& Hlscher, C
Yes when medically supervised and compounded through reputable pharmacies