Nuvella Serum water rinses away too much of the skins own oil and people who take cold showers quickly start sweating again said Falkenstein. Shower gel should have a pHvalue of . because this is similar to the skins own pH. Many products are described as pHneutral but this is misleading she said. This equates to a value of which is not suitable for the skin because it will dry it out. The skin also should be thoroughly dried off. Falkenstein said people used to believe that a little bit of water left on the skin helped it stay moisturised. Specialists now know thats not true. When the water begins to evaporate ...