What was the liquid that oozed out of my injection site directly after getting Botox?

The only two things that usually drip onto your skin is a little trickle of blood which you would know what it is or a small amount of Botox.

Thank you for your question.  The situation you are describing is likely some Botox dripping from the end of the injection needle and is not a concerning instance.  Best of luck.

A very minute amount of liquid can sometimes leak at the tip of the needle especially if a very superficial injection is made where the injector is either trying to avoid blood vessels ( and thereby avoid bruising) or if a very critical area is being injected to effect a thin , superficial muscle rather than a deep muscle eg forehead or upper lip .It should not be enough to effect result .

Rest assured that this is nothing to worry about. Neuromodulators are diluted in Normal Saline and it is not uncommon for a little leakage of botox at the injection site during the injection. Since hypodermic needles are used to pierce the skin, it could also be a little blood droplet.
Anna Sylwestrowicz MD, FRCP(C)
Victoria, BC

It is not unusual for a drop of the product to be at the tip of the needle when it is withdrawn from the skin.  This can result in a tiny bit of leakage of the botox onto the skin. If a large amount of the botox leaks out-the area may need to be retreated in 2 weeks. Needles are used to pierce the skin and sometimes a drop of blood will leak out as well.  This is nothing to worry about.