1. Yellowed Plain Sateen Sheets? 3 Quick Restoration Tips Method 1: Hydrogen Peroxide + Baking Soda (Stubborn Yellowing) Suitable for: Yellowed pillowcases, sweat stains around collars Instructions: Mix 1L warm water with 100ml 3% hydrogen peroxide and 2 tablespoons baking soda, stirring well. Soak the yellowed area for 40 minutes (avoid embroidery or dark binding). Machine wash and rinse (select the "Strong Stain Removal" setting). How it works: Hydrogen peroxide breaks down pigments, while baking soda neutralizes acidic sweat stains.   Note: Do not mix with bleach! Do not use on silk or pure silk!   Method 2: Lemon Juice Sun-Drying (Natural Bleaching) Suitable for: Minor yellowing, overall yellowing and brightening Instructions: Squeeze the juice of a fresh lemon and apply directly to the yellowed stain. Dry in the sun for 1 hour (UV light activates the citric acid). Hand wash in cold water (high temperatures will set stains). Effect: Natural and safe, suitable for baby bedding.   Note: White/light beige only; dark colors may fade!   Method 3: Oxygen Cleaner + 40°C Warm Water (Overall Renovation) Suitable for: Large yellowing and old stains Instructions: Fill a bathtub/large basin with 40°C warm water and dissolve 50g of Oxygen Cleaner. Soak the sheets for 3-4 hours, turning them once. Machine wash as normal; no additional detergent is needed. How it works: Active oxygen penetrates deep into the fibers, breaking down pigments without damaging the fabric.   Note: The water temperature must not exceed 40°C, otherwise it will lose its effect. Colored bedding may fade slightly.   3 Key Tips for Preventing Yellowing Pre-washing: Spray collar cleaner on sweat-stained areas (let it sit for 5 minutes before washing). Water Quality Management: In hard water areas, descale with citric acid (5g/L water soak) once a month.   Drying Tips: Dry on the reverse side, avoiding direct sunlight. Let dry thoroughly before storing to prevent mold and yellowing. 2. Restore the softness of your hotel's plain cotton sateen sheets at a low cost Problem Causes Sateen bedding becomes stiff due to the following factors: Hard water mineral deposits (more common in northern China, resulting in white scale) Detergent/softener residue (clogging fiber gaps) High-temperature drying/sun exposure (curing the cotton grease and causing the fibers to curl)   Method 1: Soak in white vinegar and warm water (removes scale and softens) Suitable for: Hard water-induced stiffness Instructions: Soak the sheets in 40°C warm water and add 1 cup of white vinegar and 1/2 cup of baking soda. Hand-rub for 5 minutes, focusing on any stiff areas. Machine wash and rinse (without detergent). How it works: Acetic acid dissolves calcium and magnesium deposits, restoring the fibers' volume.   Note: Do not mix with bleach! Preventative treatment once a month (in hard water areas).   Method 2: Starch Water Setting (Instant Softening) Suitable for: Frizzy fabrics and loss of drape Instructions: Add 2 tablespoons of cornstarch to 1 liter of cold water and simmer until slightly thickened. Let cool. Soak the sheets for 20 minutes and dry directly (no rinsing required). Result: The starch fills the fiber scales, making them instantly silky and smooth.   Method 3: Low-Temperature Steam Ironing (Fiber Revitalization) Suitable for: Fiber curling caused by high-temperature washing   Instructions: Lay the sheets flat when they are half-dry. Set the steam iron to the cotton and linen setting (below 150°C) and iron between sheets. Gently stretch along the grain (do not pull violently). Key: Shake the sheets while they are still hot after ironing to help them rebound and become more fluffy.   5 Tips to Prevent Fabric Hardening Washing Instructions: Water temperature ≤ 40°C, neutral detergent, machine wash inside out Drying Techniques: Air dry in the shade, avoid direct sunlight Avoid fabric softener: Use white vinegar instead (add 50ml during the final rinse) Water Treatment: In hard water areas, install a water filter or descale with citric acid monthly Storage: Fold completely dry and place in an activated charcoal moisture-proof bag