A person asked about the validity of their ghusl (ritual washing), prayer, and fasting after using a waterproof eyebrow pencil and finding a small amount of it remaining after washing.
Peace be upon you. According to Grand Ayatollah Khamenei and Grand Ayatollah Sistani, you must repeat the ghusl and the prayer that was performed with the invalid ghusl. However, your fasting is valid. May you be successful in all good.