Drying white bedding outside in direct sunlight after washing is an effective natural method to keep it bright and crisp, according to senior audience writer Sophie Harris. Sunlight contains ultraviolet (UV) rays, which have a natural bleaching effect that can whiten fabrics and reduce yellowing over time. The fresh air also leaves bedding smelling clean, and line drying is gentler on fabric than tumble drying, making sheets last longer.
How to Use Sunlight for Whitening
For best results, hang white items in direct sunlight and space them evenly so light reaches as much fabric as possible. Turn larger items like duvet covers and sheets halfway through drying to ensure even exposure. However, avoid leaving delicate materials in strong sun for too long, as prolonged exposure can weaken some fibres. For everyday cotton bedding, towels, and sturdy white clothing, regular outdoor drying is a simple way to maintain brightness.
Additional Whitening Methods
Harris also recommends using Napisan, an antibacterial stain remover, for stubborn stains on dingy socks. Dissolve a scoop in warm water and soak items for one to two hours before washing. This method also helps brighten school shirts and white trainers. Other tips include separating colours from whites and occasionally using a whitening booster to restore brightness without harsh chemicals.
