Ironing Temperature Guide

The dots inside the iron symbol on clothing care labels indicate the maximum temperature setting. One dot = low heat (110–120°C / 230–248°F) for synthetics like polyester and nylon. Two dots = medium heat (150–160°C / 302–320°F) for wool and blends. Three dots = high heat (200–230°C / 392–446°F) for cotton and linen. The more dots, the higher the temperature the fabric can safely withstand.

Cotton should be ironed at 200°C (392°F) — this is the high heat setting with 3 dots. For best results, iron cotton while it is still slightly damp. Use plenty of steam to remove stubborn wrinkles. For dark cotton garments, iron inside out to prevent developing a shiny surface. If your cotton item is blended with synthetic fibers, reduce the temperature to medium (150°C / 302°F) to protect the blend.

Silk is delicate and requires special care. Iron silk at a low temperature (120°C / 248°F) — the 1-dot setting. Always iron silk inside out while it is still slightly damp. Never spray water directly onto silk, as this can leave permanent water spots. Use a clean pressing cloth between the iron and the fabric for extra protection. Avoid steam if possible, or use only minimal steam. Move the iron continuously and do not press too hard.

Steam ironing uses water vapor to relax fabric fibers, making it easier to remove wrinkles and create sharp creases. It's ideal for cotton, linen, wool, and most natural fibers. The moisture penetrates the fabric and helps reshape it. Dry ironing uses heat alone without moisture. It's recommended for synthetic fabrics like polyester, nylon, and acetate that can be damaged by steam or may develop water spots. Some delicate fabrics like silk and rayon should only be ironed with minimal or no steam. Always check the care label — the steam symbol (lines under the iron) indicates whether steam is safe to use.

Always iron from lowest to highest temperature. Start with synthetic fabrics (polyester, nylon, acetate) at the low 1-dot setting. Then move to medium-temperature fabrics like wool, cashmere, and poly-cotton blends at the 2-dot setting. Finish with high-temperature fabrics like cotton, denim, and linen at the 3-dot setting. This order prevents accidental scorching — a hot iron that has just been used on linen could instantly melt polyester if used next. It's also more efficient since the iron heats up faster than it cools down.

Iron shine (also called scorch marks or glazing) occurs when a hot iron flattens fabric fibers excessively, especially on dark fabrics. To remove shine: (1) Dampen the affected area with water. (2) Place a clean cotton cloth over it. (3) Gently iron over the cloth at medium heat. (4) Lift the cloth and brush the fabric lightly with a soft brush to lift the fibers. For stubborn shine on wool, try holding a steaming iron slightly above the fabric (without touching) to let the steam relax the fibers. Prevention is best — always use a pressing cloth on dark and delicate fabrics.

Several fabrics and materials should never be ironed: leather and suede (heat causes cracking and damage), vinyl and PVC (they melt), rubber-backed items, sequined or heavily embellished fabrics, wax-coated fabrics, and any item with a "Do Not Iron" symbol (cross through the iron icon). Also avoid ironing delicate lace, some technical performance fabrics with special coatings, and waterproof membranes like Gore-Tex. For these items, use a garment steamer at a safe distance or consult a professional dry cleaner. Always read the care label — if in doubt, don't iron.

White residue on dark fabrics is usually caused by mineral deposits from tap water building up in the iron's steam vents. When you use steam, these minerals are released along with the water vapor and can leave chalky white marks. To prevent this: use distilled or demineralized water in your iron, regularly clean the iron's soleplate and steam vents according to the manufacturer's instructions, and use the self-clean function if your iron has one. If residue appears, wipe it off immediately with a damp cloth before it sets into the fabric.

Yes, ironing clothes inside out is recommended for most garments. It protects the outer surface from accidental scorching, shine marks, and color fading. This is especially important for dark-colored fabrics (which show shine easily), delicate fabrics like silk, printed or embroidered items (to protect the decoration), and synthetic blends. The only exceptions are when you need to create sharp creases on collars, cuffs, and pleats — these are best ironed from the outside with a pressing cloth. For most everyday ironing, turning garments inside out is a simple habit that extends the life of your clothes.

The "no steam" symbol appears as an iron symbol with steam lines (usually 3 short horizontal lines below the iron) that are crossed out with a diagonal line or ✕. This means you should use dry heat only — do not activate the steam function on your iron. This symbol is commonly found on silk, acetate, rayon, and some synthetic fabrics that can develop water spots or be damaged by moisture. Some irons have a specific dry ironing setting; if yours doesn't, simply empty the water reservoir and avoid pressing the steam button. If you see just the iron symbol with dots but no steam lines at all, steam is generally optional and can be used with caution.