^I don't believe this, sounds like faux science.
Things absorbed thro the skin don't just sit there; they are absorbed by tissue and end up eventually in body's fluids and bloodstream. With the amount of makeup, foundation, sunscreen, creams and medications we put on our face daily we would look like we had elephantiasis of the face if this theory were true.
Bags under the eyes are caused by aging-->loss of collagen/elasticity of the skin, sun exposure, genetics, and gravity. 'Puffy eyes' are due to lessening of circulation of fluids, and they 'pool' in certain areas. Just like after that bad night of drinking you wake up with puffy eyes which dissipates in a few hours.
I don't believe there are such things as 'closed pores'. Thats an oxymoron isn't it? You have pores all over your body including around your eyes, that's why some people get pimples and milia there.