Most peptides don't come ready to inject they come as powder for a reason. Peptides are lyophilized (freeze dried) to keep them stable and effective. When you receive them, you simply: Add GHK Cu 50mg 4 Pack Lyophilized Powder Made In USA GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are Injectable GHK Cu: Beginner's Guide to Copper Peptide