Korting, H C, K Hübner, K Greiner, G Hamm, and O Braun-Falco. 1990. “Differences in the Skin Surface PH and Bacterial Microflora Due to the Long-Term Application of Synthetic Detergent Preparations of PH 5.5 and PH 7.0. Results of a Crossover Trial in Healthy Volunteers”. Acta Dermato-Venereologica 70 (5):429-31. https://doi.org/10.2340/0001555570429431.