It is obligatory to remove anything that prevents water from reaching the body part.

The Shaykh : The scholars derived a benefit from this, which is that it is obligatory to remove anything that prevents water from reaching the body part. Removing anything that prevents water from reaching the body part is necessary. For example? Yes. What? Nail polish. Nail polish for women, the white paste. The white paste prevents water from reaching, dough, many things. One must remove from the parts of the ablution everything that prevents water from reaching what is underneath, unless it is permissible by the Shari'ah to place that, such as a cast tied on a fracture, or leather socks when wiping over them; otherwise, one must remove the barrier.
And here we remind our brothers who work with the white paste to pay attention to the parts of the ablution, because the white paste may fall on the hand or the foot without one realizing it, so one must be careful.