Hazrat Alqamah used to cover his face while in the state of Ihram.

Hazrat Mujahid says that if wind (dust) troubles you, then in the state of Ihram you may cover your face with a cloth, and if a woman in Ihram is troubled by the wind, there is no harm if she hangs a cloth over her face.

Hazrat Aisha (may Allah be pleased with her) narrates that we were with the Prophet Muhammad (peace and blessings be upon him) in the state of Ihram. When riders would pass by us, we would lower our cloths over our faces and heads, and when they had passed, we would lift the cloths again.

Hazrat Ibrahim says that if a Muhrim is troubled by the wind, there is no harm if he lifts a cloth with his hands and covers his jaws with it.

Hazrat Tawoos says that there is no harm if you cover your face while in the state of Ihram, and you can also cover from your nose to your forehead while in the state of Ihram.

Hazrat Ata says that if a male in ihram lies on his side, he may bring the cloth towards his eyes, and a female in ihram may let it hang over her face.

Hazrat Faraafisah bin Umair narrates that I saw Hazrat Usman covering his face while in the state of Ihram.

Hazrat Jabir had covered his face up to his hair; the narrator, Hazrat Abu Zubair, indicated with a cloth from the head upwards.

Hazrat Ibn Umar (may Allah be pleased with them both) states that the face and whatever is above it is part of the head, and the head is from the face, so no person should cover the chin or the part above it.

When Hazrat Tawus would sleep, he would cover his face with the edges of his beard.