Eczema is a common skin condition characterized by dry, itchy, and inflamed patches. Many individuals with eczema wonder about the effects of ocean water on their skin. This article explores how ocean water might interact with eczema-prone skin, considering both potential benefits and important precautions.
How Ocean Water Might Help Eczema
Ocean water contains various minerals, including magnesium, calcium, zinc, iodine, and sulfur, which may offer soothing properties for the skin. Magnesium, in particular, is the third most abundant element in seawater and has been shown to improve skin barrier function and reduce inflammation in atopic skin. One study observed that individuals with atopic skin who immersed a forearm in salt water for 15 minutes experienced significantly improved skin barrier function and reduced redness and roughness compared to those in tap water.
The salt in seawater is believed to have antiseptic properties, which could help reduce the risk of infection in scratched or broken skin. The practice of bathing in mineral-rich waters, known as balneotherapy or thalassotherapy, has a long history of use for various skin conditions, including eczema. These therapies suggest that the minerals in the water, along with factors like temperature and mechanical effects, can contribute to skin improvement.
Potential Drawbacks and Important Precautions
Despite anecdotal reports of ocean water soothing eczema, it can also have negative effects. The high salt concentration in ocean water can have a drying effect on the skin by drawing moisture from the outer layer, the stratum corneum, leading to increased stiffness and drying stress. This can make the skin feel tight, flaky, and more prone to cracking or small tears, which could allow bacteria to enter.
Swimming in ocean water when skin is broken or experiencing a flare-up can cause stinging and irritation. Ocean water may also contain pollutants such as pesticides, heavy metals, or microplastics, which can irritate sensitive skin or trigger contact dermatitis. Allergic reactions to marine organisms or certain chemicals in the water are also possible. Therefore, check local water quality advisories, especially after heavy rainfall, as this can impact water purity.
Avoid swimming in ocean water during eczema flare-ups or if there are open wounds. Staying well-hydrated by drinking fluids before and after swimming can help counteract the drying effect of saltwater. Consult a dermatologist before using ocean water for eczema to ensure it is appropriate for your skin.
After Your Ocean Swim: Skincare Tips
After swimming in the ocean, rinse your skin thoroughly with fresh water to remove salt, sand, and any potential irritants. Rinse for at least 30 seconds for effective removal. Gently pat your skin dry with a soft towel, avoiding harsh rubbing that could further irritate sensitive skin.
Immediately after drying, within approximately three minutes, apply a generous amount of moisturizer to lock in hydration and counter any drying effects from the saltwater. Using a cream or ointment rich in emollients and humectants can help restore the skin’s barrier function. Continue to monitor your skin in the hours and days following your swim for any signs of irritation or worsening eczema symptoms.