The face extends vertically from the normal hairline to the lower chin.
Its horizontal boundary is stated as from one earlobe to the other. Washing must cover the required area within these boundaries, including the lower chin.
Opening interactive controls...
Boundaries of the Face
Taharah and Wudu Obligations: Limits, Evidence and Juristic Differences
The face extends vertically from the normal hairline to the lower chin.
Its horizontal boundary is stated as from one earlobe to the other. Washing must cover the required area within these boundaries, including the lower chin.