abstract |
(57) Abstract: An object of the present invention is to promote ceramide synthesis of the epidermal cells themselves inside the skin surface layer, and to improve rough skin and to treat various skin diseases through recovery of skin barrier function. To provide a ceramide synthesis accelerator that is expected to have a specific effect. The present invention relates to a ceramide synthesis accelerator containing nicotinic acid or a nicotinic acid derivative, or nicotinic alcohol or a nicotinic alcohol salt as an active ingredient. |