Can vitamin C improve rough skin?

Oral antioxidants can help prevent skin roughness due to photo-ageing, and common antioxidants include vitamin C, vitamin E and beta-carotene.
However, the efficacy of antioxidants for skin roughness due to underlying conditions such as psoriasis, chronic eczema and follicular keratosis is unclear.
Therefore, patients should select and use antioxidants properly under medical supervision and should not use them blindly.