Answered by Shaykh Faraz Rabbani
My cheap socks bled their color when I got them wet. As a result, my toenails were left with dye on them, coloring them at the edges with color that comes out only with rubbing ….would this be considered to block water? similarly, does smudged ink on the fingernails prevent a valid wudu?
Answer:
Things without a perceptible body (such as ink and your sock’s dye) are not considered barriers preventing water reaching the skin. Thus, your wudu would be valid.
Wassalam,
Faraz Rabbani