Efficacy and safety of a topically applied Avène spring water spray in the healing of facial skin after laser resurfacing.

BACKGROUND: Although laser resurfacing is a well-accepted treatment, tolerance problems may preclude patient's acceptance of the procedure. Post-laser protracted erythema is a prime problem, associated with the symptoms of pain, itching, stinging and tightening. OBJECTIVE: The present study was conducted to evaluate a low-salt medical spring water (Avène, Avène-les-Bains, France), in conjunction with the standard use of an emollient, to improve tolerance by hydrating the postlaser skin. METHODS: A controlled, randomized, open-labeled, multicentric and two parallel group study was completed after 84 days in 74 patients, 34 applying a petrolatum ointment alone (control group), and 40 applying petrolatum ointment in association with the Avène spring water spray ad libitum (water group). RESULTS: The water spray showed a pronounced effect on reducing erythema, from the second week of postlaser onwards, with a statistically significant difference in favor of the water group compared with the control group (p < or = 0.04 from day 14 to day 84, except a non-significant trend on day 28). In addition, the water spray was found to significantly reduce itching on day 28 (p < 0.05), and stinging and tightening on day 14 and day 21 (p < 0.05). Pain was not modified by the water. CONCLUSION: Topical water appears to be a helpful adjunctive treatment to petrolatum ointment for counteracting erythema, itching, stinging and tightening during the postlaser treatment period.

Immunomodulation induced by Avène spring water on Th1- and Th2-dependent cytokine production in healthy subjects and atopic dermatitis patients.

Avène spring water (ASW) is commonly used in France for treating atopic dermatitis and psoriasis. Previous works demonstrated modulation of cell membrane fluidity by ASW. The aims of the present study were (a) to investigate a possible in vitro effect of ASW on Th1- and Th2-dependent cytokine production using peripheral blood mononuclear cells from healthy individuals and (b) to investigate both the in vitro effect of ASW on AD patients' cells and the in vivo cellular and clinical modifications induced by a 3-week Avène Medical Spa water cure (AMSWC). The effect of ASW was tested on lymphocyte cultures, which were stimulated in vitro by various mitogens and a superantigen of staphylococcal origin. The lymphocyte proliferation and the production of the cytokines IL-2, IL-4 and IFN-gamma were tested. The results showed that ASW-containing medium enhanced the lymphoproliferative response to some mitogens. IL-2 and IFN-gamma production were also increased in stimulated culture supernatants. Conversely, ASW-containing medium induced a decrease in IL-4 production by normal peripheral blood lymphocytes. Furthermore, AMSWC was able to amend the clinical features as well as the immunological Th2 profile of atopic dermatitis.