I think the rash is not what leaks out of the injection onto the surface, very rare but it happened to me a time or two. Its when the injection leaks out of the muscle into the "layer" between skin and muscle you sometimes get a hot spot or rash. Splashing that last drop in the syringe onto your skin isint going to give you a rash or hurt anything, however I beleive the test is going to be tied up hard with the oil and with less water like inside your body, there isnt going to be much to break down the oil in order for the free testosterone to be given up. In otherwords dont expect to really get anything out of this, like skin absorbtion, etc. I think your best bet for skin absorbtion would possibly be with prop but test E or test Cyp is a very strong ester and I wouldnt expect any skin availability unless you are in habit of going several days without showering/bathing.Originally Posted by ManzNumero1