If Tren is made using a "kit" then the dissolving solution is
benzyl alcohol.
benzyl alcohol is often used as a topical anesthetic. This is what gives it a numbing effect. I have never experienced any pain with a Fina only injection, but numbness will occur; it is really unavoidable until another dissolving solution is found. Also, always try to go off cycle for at least as long as you are on cycle. This will prevent an oil abcess, which WILL become EXTREMELY painful. You guys are obviously alot more hardcore than me, I have never site injected. I stick to glutes and thighs (Deep I.M.)only, and never more than 2cc per site.