Detailed answer

Blackheads are caused by excess oils and dead skin cells clogging pores. They are not associated with a vitamin deficiency. However, certain factors such as hormonal changes, oily skin, and poor cleansing habits can contribute to the formation of blackheads. A balanced diet and proper skincare routine can help prevent and manage blackheads. Avoiding excessive oil-based products, regularly exfoliating the skin, and using non-comedogenic cleansers can help keep the pores clean and minimize blackhead formation.