Overview

• New advice circulating today highlights rubbing a thin film of washing up liquid on dry glass to deter droplets, a TikTok-backed tip that works briefly and needs careful reapplication away from window frames.
• Multiple outlets also recommend bowls of salt or even bicarbonate of soda on sills to absorb moisture, with guidance to replace the contents once clumped, wet or darkened; typical packs cost about 65p.
• Indoor living specialists at VonHaus report the German five‑minute ventilation rule, the salt trick and shaving foam each reduce fogging only temporarily, with shaving foam lasting from hours to a couple of days.
• Public guidance stresses wiping down wet panes, avoiding big temperature gaps between rooms, and following WHO temperature targets of about 21C for living rooms and 18C for bedrooms to limit condensation.
• For persistent damp or mould, experts say dehumidifiers offer the most reliable control, noting English Housing Survey data that roughly 4% of homes in England report damp and warning of related health risks.