I've been through a couple bottles of blue and pink each. I like to rub down shoulders, elbows, biceps, tris, knees, hamstrings, ankles, whatever about 10 minutes before warmup. Then warm up and train as normal. Stretch then ice if you need it. I think it helps warm the muscles and tendons prior to training, makes warming up for me easier anyhow
Spend the 8 bucks and see what works for you.