On days you don’t leave the house or wear makeup, is washing your face necessary? The answer is yes, especially at night. Even if you aren’t leaving the house or wearing makeup, oil and grime can still accumulate on your skin. Residues of past skincare products, household items, and air pollutants can clog pores, cause irritation, and contain free radicals that lead to damaged skin cells. However, if you want to forgo a twice-a-day cleanse, skip the morning wash, but stay consistent with your nightly routine.