A good kind of carrier oil for homebrew steroid injections should be thin,clean,sterile,painless,low in particulate matter,anallergic,and has good solubilizing ability. EO = Ethyl Oleate. EO is a solvent, which dissolves the powder but its use is to thin the solution’s viscosity.It’s a thin and expensive oil, created from ethanol, and used as a rubber softener, solvent, and typically used by us as a base for steroid solutions. It provides smooth and painless injections, and will suspend compounds at much higher concentrations than just oil. (It will make 100mg/ml Prop completely painless…) And because it’s a solvent, it allows you to use less Benzyl Benzoate in your blends, however BA is still used to maintain sterility. GSO = Grape Seed Oil.GSO is called the ‘carrier’.A much superior oil for injections, as opposed to cottonseed oil, but also has a shorter shelf life. It should be stored in a dark place, at room temp. CSO=Cottonseed oil.It is very thick, and has trouble flowing through a small gauge needle. It’s just a byproduct of the food industry, so it is cheap and readily available. Also some people use Wesson soybean oil,corn,peanut oil,sesame oil, soy oil, and safflower oil,MCT oil,olive oil,etc. There are some other carrier oils available like rice oil, apricot kernel, coconut, sweet almond oil, avocado, flaxseed, and watermelon seed oil. How Long will Oils Last? Oil Expiration Date (Unopened) Pantry Fridge Avocado Oil lasts for 9-12 Months 1 Year Blended Oil lasts for 2 Years — Canola Oil lasts for 2 Years — Coconut Oil lasts for Months-Years — Corn Oil lasts for 1 Year 1 Year Chili Oil lasts for 9-12 Months 1 Year EVOO(Extra Virgin Olive) lasts for 2-3 Years — … Continue reading