Though salt water can be useful in sterilizing bacteria, those of us with blemish-prone skin should be careful not to spend too much time in the ocean. Salt water can reduce your skin’s ability to protect itself against sun damage by 23%, as well as dehydrating the epidermal layer.[1] For example, the salt levels present in the Mediterranean Sea, the world’s saltiest ocean, reduces skin’s moisture levels by 23% when compared with natural springs or lakes.[2] Choose a water-resistant form of sun protection, such as Vichy’s Mattifying Corrective Care Sun Protection with SPF 30, to make sure your skin is effectively protected, and try and rinse skin with fresh water to avoid a film forming resulting in a build-up of sebum which can lead to imperfections.
[1] Schempp, C. M., Blümke, C., Schulte-Mönting, J., Schöpf, E., & Simon, J. C. (1998). Effect of various salt solutions on ultraviolet B-induced erythema and pigmentation. Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete, 49(6), 482-486.
[2] Ibid.