Post-Sauna Skin Hydration Sauna bathing can leave skin feeling refreshed, but repeated heat exposure may also leave it feeling dry or depleted. ETHOS 528 Sauna Body Oil was created to be the final step in your sauna protocol, a lightweight botanical blend that helps replenish moisture, soften skin, and restore a healthy glow after heat exposure. Fast absorbing and never greasy, it leaves skin feeling nourished, smooth, and revitalized.