Question

the reason why lipstick and nail-polish is removed before surgery
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Answer 1

for frightening
no
just kidding
it's actually chemical reagents may enter into the organs directly

Answer 2

$\huge \bf \mathfrak \orange{reason s: }$

Do not wear makeup, lotion, powder, deodorant or nail polish. It is important to remove your nail polish so that the doctors and nurses can see your true color during the surgery and in the Post Anesthesia Care Unit. The color of the skin and nail beds is an important sign of blood circulation.

A sensor is placed on the fingertip and this measures the level of oxygen in the blood and works by passing red light through tissue. Nail polish may reduce the effectiveness of this monitor. ... This is why acrylic nails, nail polish, solar nails, shellac polish, etc are asked to be removed prior to surgery.