Effect of sphingomyelin on levels of covalently-bound ω-hydroxy ceramide in the epidermis induced by UV-B irradiation.

<p>Levels of ω-hydroxy tetratriacontenoic sphingoshine (d18:1-ω-hydroxy C34:1) are expressed as relative peak area per epidermal protein content. The values are shown as mean ± SD (n = 8/group). *: <i>P</i> < 0.05 (vs. the control group). #: <i>P</i> < 0.05 (vs. day 0).</p

Effect of sphingomyelin on TEWL and SC water content (B) after UV-B irradiation.

<p>(A) Transepidermal water loss (TEWL); (B) Stratum corneum (SC) water content. The values are shown as mean ± SD (n = 8/group). *: <i>P</i> < 0.05 (vs. the control group). #: <i>P</i> < 0.05 (vs. day 0).</p