The First 24Hours This is the critical window where the adhesive is still curing. • Keep them bone dry: Avoid showers, steam, saunas, and swimming. Even a humid kitchen while boiling pasta can mess with the bond. • Don't touch: Your hands have natural oils that can break down the glue before it has fully set. • Sleep on your back: If you’re a stomach sleeper, try to prop yourself up with pillows to avoid crushing the lashes into your pillowcase.