Affiliation:
1. Research and Innovation Center L'Oréal China Shanghai China
2. Research and Innovation Center L'Oréal France Chevilly‐Larue France
3. L'Oreal Dermatological Beauty L'Oréal China Shanghai China
4. Peking University First Hospital Beijing China
Abstract
AbstractBackgroundProlonged use of medical masks has increased skin‐related issues.AimTo evaluate the efficacy of a facial cream and facial mask in mitigating medical mask related skin symptoms.MethodsHealthy women were randomly assigned to apply a facial cream (n = 32) or a facial mask plus a facial cream (n = 32) on half‐faces after wearing medical masks for 4 h (Tb). Transepidermal water loss (TEWL), dryness score, and redness area were assessed at Tb and 10 min after using the cream (T1) in the facial cream group, and at Tb, 1 h after using the facial mask (T2), and 10 min after using the cream (T3) in the combined use group.ResultsIn the facial cream group, the treated half‐face showed significantly better improvements from Tb to T1 in TEWL (−2.95 ± 0.38 vs. −0.68 ± 0.35 g/h·cm2, p < 0.001) and skin dryness score (−1.00 ± 0.12 vs. 0.00 ± 0.00, p < 0.001). In the combined use group, the treated half‐face showed significantly better improvements from Tb to T2 and T3 in TEWL (T2, −3.46 ± 0.33 vs. −0.09 ± 0.13 g/h·cm2; T3, −4.67 ± 0.31 vs. −0.28 ± 0.22 g/h·cm2) and skin dryness score (T2, −0.63 ± 0.13 vs. 0.03 ± 0.03; T3, −0.94 ± 0.17 vs. 0.19 ± 0.07) (all p < 0.001) then the untreated half‐face. The combined use group had significantly lower TEWL at T3 than T2 (p < 0.05). The reduction in redness area was similar between the treated and untreated half‐faces in both groups.ConclusionsThe test facial cream and mask significantly improved skin barrier function and alleviated dryness symptoms associated with medical mask use, with the combined use offering superior benefits.