Improvement of naturally aged skin with vitamin A (retinol).
Kafi R, Kwak HS, Schumacher WE, Cho S, Hanft VN, Hamilton TA, King AL, Neal JD, Varani J, Fisher GJ, Voorhees JJ, Kang S.
Kafi R, et al. Among authors: varani j.
Arch Dermatol. 2007 May;143(5):606-12. doi: 10.1001/archderm.143.5.606.
Arch Dermatol. 2007.
PMID: 17515510
Clinical Trial.