Hi
Have you ever slept with anything on your head, example beanie, satin bonnet, scarf, etc.
As if you have not then you may find a plastic a challenge. Try not to cover your ears and keep it off your for head. Also try using a shower cap.
I hope that helps.
Our science and biology minds can answer the first part of your question. As to my understanding clarifying takes everything off, strips all oils.
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