Four days of combination 15% L-ascorbic acid and 1% -tocopherol provided 4-fold protection against erythema (Fig 1), whereas 15% L-ascorbic acid or 1% -tocopherol alone protected 2-fold when compared with vehicle-treated skin.
Four days of combination 15% L-ascorbic acid and 1% -tocopherol provided 4-fold protection against erythema (Fig 1), whereas 15% L-ascorbic acid or 1% -tocopherol alone protected 2-fold when compared with vehicle-treated skin.