Preventing blisters on the beach requires managing friction, moisture, and heat. The most effective way is to wear proper footwear like supportive water shoes or sandals with arch support; simple flip-flops often allow sand to rub against the skin, creating "sandpaper" friction that leads to blisters. If you prefer walking barefoot, try to stay on the firm, wet sand near the water's edge, as it provides a more stable surface and keeps your feet cool—dry, hot sand can actually cause thermal blisters or burns. Applying a barrier balm or anti-chafing stick to high-friction areas like the heels and between the toes can also help. After your walk, always rinse your feet thoroughly with fresh water to remove every grain of sand, as trapped grit in your shoes later is a primary cause of irritation and skin breakdown.