A Short Field Guide
to Laundry.

Professional laundry is the washing, rinsing, finishing and pressing of garments and household textiles using commercial-grade equipment, precise temperature control and fabric-appropriate chemistry. It is not the same process as putting clothes in a home washing machine — even when the end result looks similar.

The difference begins with the machine. A professional laundry uses industrial washer extractors rated for continuous commercial use, operating at capacities and extraction forces that domestic appliances cannot match. It continues with the water — softened or filtered, dosed precisely per load weight. It includes the chemistry — detergents, builders, softeners and sanitisers selected and measured per fabric type, not poured by hand from a bottle. And it ends with finishing — steam pressing, folding and packaging to a standard that preserves the garment's shape and presentation.

The Swiss Laundry offers two professional washing methods for different fabric types and soiling levels: machine wash using industrial washer extractors, and hand wash for delicate fabrics that require individual attention. Both methods use the same intake assessment, the same finishing standards and the same quality inspection before return.

The most important difference between having a garment washed at home and having it professionally laundered begins before any detergent is added. It begins with the machine.

A home washing machine is an appliance designed for convenience. It handles 6 to 8 kilograms per cycle. The drum rotates at 800 to 1,400 RPM during spin. Most household cycles run at 30 to 60°C. The machine uses a fixed water volume, a generalised wash programme, and is designed for two or three uses per week.

An industrial washer extractor is a different category of machine. Capacities range from 10 to 120 kilograms per cycle. The critical engineering difference is in the extraction phase — industrial machines generate 300 to 400 G-force during extraction, compared to 100 to 200 G-force in a domestic machine.

• CapacityHome: 6–8kg. Industrial: 10–120kg. More importantly — industrial machines sort garments by fabric type and colour before loading, something a home machine cannot do.
• Extraction G-forceHome: 100–200G. Industrial: 300–400G. At 400G, garments enter the dryer at 50–55% moisture content versus 70–80% from a domestic spin. The difference is significant heat exposure over hundreds of washes.
• Temperature controlHome machines heat water once at the start — temperature drops as cold rinse water enters. Industrial machines maintain precise temperature throughout the entire cycle, programmed per fabric.
• ProgrammabilityIndustrial machines run different programmes per fabric type — different agitation speeds, temperatures, rinse cycles and extraction durations. A home machine runs one generalised programme for everything.
• Water qualityProfessional laundries use softened or filtered water. Hard water deposits mineral salts on fabric fibres with every wash — causing gradual stiffness, dullness and fibre degradation over time.
• Chemical precisionIndustrial machines dose detergent, softener, builder and other agents automatically by load weight. Home machines rely on user measurement — almost always imprecise.
• Machine durabilityIndustrial machines are rated for 8 to 10 hours of continuous daily operation. Bearings, seals, drums and motors are built to a different engineering standard than domestic appliances.

This is why a professionally washed shirt holds its colour, shape and press longer than one washed at home repeatedly — even with the same detergent and at the same temperature. The machine is simply operating to a different standard.

Machine washing at a professional laundry uses industrial washer extractors to clean garments that are robust enough to withstand mechanical agitation in water. It is the appropriate method for the majority of everyday garments — shirts, trousers, kurtas, t-shirts, linens, towels, bedding, uniforms and cotton household textiles.

What happens in a professional machine wash cycle:

• Intake and sorting. Garments are sorted by fabric type, colour and soiling level before washing. Darks, lights and whites are always separated. Heavy soiling is pre-treated before the main cycle.

• Pre-treatment of stains. Individual stains — food, oil, ink, perspiration — are identified and pre-treated with appropriate agents before the garment enters the machine.

• Programme selection. The correct wash programme is selected for the fabric: temperature, agitation speed, cycle length and number of rinses.

• Washing. The drum fills with correctly dosed water and detergent. Agitation loosens and suspends soiling. The precise temperature is maintained throughout.

• Rinsing. Multiple rinse cycles remove all traces of detergent and soiling. Residual detergent in fabric causes itching, stiffness and faster re-soiling.

• Extraction. High G-force spinning removes the maximum possible water before drying begins.

• Drying and finishing. Garments are dried at controlled temperature and finished — steam pressed, folded or hung as appropriate for the garment type.

Hand washing is the appropriate method for garments that are too delicate for mechanical agitation in a drum — fabrics where even the gentlest machine programme would cause damage through physical stress, friction or heat.

Garments that require hand washing include: fine silk that is not suitable for dry cleaning, delicate lace, heavily beaded or embellished pieces where stones or sequins would be damaged by drum agitation, antique and vintage textiles, fine wool knits too delicate for machine programmes, and any garment where the construction — padding, boning, structured interfacing — would be distorted by mechanical action.

What professional hand washing involves:

• Water temperatureCool to lukewarm — typically 20 to 30°C. Hot water causes protein fibres (silk, wool) to contract even without agitation.
• Detergent selectionSpecialist mild detergent formulated for hand washing delicates — pH-neutral, no optical brighteners, no enzymes that degrade protein fibres.
• AgitationGentle squeezing and pressing — never wringing or twisting. Wringing creates mechanical stress that distorts the weave structure permanently.
• RinsingMultiple rinses until water runs completely clear. Residual detergent in a delicate fabric causes fibre degradation over time.
• ExtractionWater is removed by gently pressing the garment between clean towels — never wrung or spun. Spin extraction would cause permanent distortion in delicate weaves.
• DryingFlat drying on a clean padded surface in the shape the garment should hold. Never hung — the weight of water causes knits and bias-cut fabrics to stretch permanently.

Hand washing is significantly more time-intensive than machine washing and is priced accordingly. It is always chosen after assessment — never as a default for delicate-looking garments that can safely be machine washed on a gentle programme.

Water temperature is one of the most consequential decisions in laundry. Too hot and fibres contract, colours bleed and finishes are damaged. Too cool and soiling — particularly body oils, grease and bacteria — is not effectively removed. The correct temperature is always a balance between cleaning efficacy and fabric safety.

• 20–30°C · ColdFor hand washing delicates. Silk, fine wool, lace, embellished pieces. Cold water prevents fibre contraction in protein fibres. Least effective for removing oils and bacteria — appropriate only when the fabric cannot tolerate heat.
• 30°CDelicate machine wash. Fine cottons, dark colours to prevent fading, lightly soiled garments. Standard gentle cycle temperature. Effective for surface soiling but not for heavy body soiling or bacteria.
• 40°CThe most common professional wash temperature. Everyday garments — shirts, kurtas, trousers, t-shirts. Effective for moderate soiling, body oils and most stains. Safe for most cotton and synthetic blends.
• 60°CHeavy soiling, household linens, towels, bedding. Kills the majority of bacteria and dust mites. Required for hygiene washing. Not suitable for coloured garments that may fade.
• 90°CWhites only — cotton bedlinen, towels, professional whites. Kills all bacteria and most pathogens. Removes deeply set soiling. Will cause irreversible shrinkage and yellowing in anything other than heavy white cotton.

Temperature and fabric: synthetic fibres (polyester, nylon, acrylic) begin to distort above 40–50°C. Protein fibres (silk, wool) contract significantly above 30°C in water. Cotton and linen tolerate heat well but will shrink at high temperatures if not pre-shrunk. Elastane and lycra blends lose their stretch permanently above 40°C.

In professional laundry, the temperature is selected per garment type at assessment — not set once for the entire load.

The chemistry of laundry is more complex than a detergent bottle suggests. Professional laundry uses a range of products in precise combinations, each serving a specific function in the wash cycle.

• DetergentThe primary cleaning agent. Surfactants in detergent surround and lift soil particles, allowing them to be rinsed away. Professional detergents are formulated for specific fabric types — heavy-duty for cotton and linen, mild and pH-neutral for delicates, enzyme-free for silk and wool.
• BuildersChemicals that soften water and enhance detergent performance. In hard water areas, builders prevent mineral deposits from bonding with the fabric. Absent from gentle detergents used on delicates.
• EnzymesBiological agents that break down specific stain types — proteases for protein stains (blood, egg, dairy), lipases for fats and oils, amylases for starch. Highly effective but must not be used on protein fibres (silk, wool) as they degrade the fibre itself.
• Optical brightenersFluorescent agents that absorb UV and re-emit as visible blue-white light, making whites appear brighter. Not suitable for coloured garments — can cause colour distortion. Never used on delicates.
• Fabric softenerAdded in the final rinse. Coats fibres to reduce friction, static and stiffness. Not appropriate for towels (reduces absorbency), sportswear (reduces moisture wicking) or certain technical fabrics.
• SanitiserUsed for hygiene washing — bedding, towels, medical or hospitality textiles. Kills bacteria and pathogens at lower temperatures when 90°C is not appropriate for the fabric.

Laundry care labels use a standardised international symbol system. The key symbol for laundry is the washtub — a container shape that indicates the washing method and temperature permitted for the garment.

• □ · WashtubMachine wash permitted. A number inside the tub gives the maximum temperature in °C. No number means any temperature.
• □30 · Tub with 30Machine wash at maximum 30°C. Delicate garments — fine cottons, dark colours, light synthetics.
• □40 · Tub with 40Machine wash at maximum 40°C. Most everyday garments — shirts, trousers, everyday cottons.
• □60 · Tub with 60Machine wash at maximum 60°C. Household linens, towels, whites.
• Hand · Hand in tubHand wash only. Do not machine wash.
• ⊠ · Cross through tubDo not wash in water. Dry clean only.
• □̲ · Bar below tubGentle machine wash — reduced agitation and spin speed.
• □̲̲ · Two bars belowVery gentle machine wash — minimum agitation.

Additional symbols alongside the washtub cover drying (square), ironing (iron shape), bleaching (triangle) and dry cleaning (circle). Together they form a complete care instruction for the garment.

A common source of garment damage is ignoring the bars beneath the washtub — using a normal high-agitation cycle on a garment marked for gentle wash. The bar is not a suggestion about temperature. It specifies the mechanical action of the drum.

Most laundry damage is preventable. As with dry cleaning, almost all damage traces back to a decision made before the wash begins.

• Colour bleed. Washing coloured garments — particularly new ones — with whites or lights causes permanent dye transfer. Dark colours and reds are highest risk. New garments should always be washed separately for the first two to three cycles.

• Shrinkage. The most common cause is washing at too high a temperature for the fabric. Cotton shrinks at 60°C+ if not pre-shrunk. Wool felts and shrinks in warm water with agitation. Synthetics distort above their heat tolerance.

• Pilling. Friction between garments in the drum causes surface fibres to break and ball. Washing garments inside-out, using mesh laundry bags for delicates, and reducing agitation all reduce pilling.

• Residual detergent. Insufficient rinsing leaves detergent in the fabric. This causes skin irritation, stiffness, faster re-soiling (residual surfactant attracts dirt) and gradual fibre degradation. Professional machines use multiple programmed rinse cycles.

• Stretching. Heavy wet garments hung to dry stretch permanently under their own weight. Knits, bias-cut garments and fine jersey should always be dried flat.

• Overloading. An overloaded machine cannot agitate garments properly — garments do not clean effectively and increased friction causes faster wear. An underloaded machine causes excessive mechanical friction.

• Wrong detergent on protein fibres. Enzyme detergents on silk or wool cause progressive fibre degradation across multiple washes — not visible in the first wash but accumulating over time.

Finishing — ironing, pressing and folding — is what separates professionally laundered garments from garments that have simply been washed. The process that follows the wash is often where the most visible quality difference appears.

• Steam pressingThe professional standard for shirts, formal trousers, sarees and kurtas. A steam press applies heat and steam simultaneously, relaxing fibres and setting them into a smooth finish that hand ironing cannot replicate. The press shape is maintained longer than an iron finish.
• Cabinet finishingShaped garments — suits, jackets, structured kurtas — are finished on a form or cabinet that inflates with steam to press the garment from the inside. This preserves the shape of structured garments without flattening the construction.
• Hand ironingUsed for embellished garments, delicate fabrics and pieces that cannot safely be pressed flat. A skilled hand iron can work around embroidery, buttons and pleats that a press cannot.
• FoldingGarments not requiring hanging are folded using consistent folds that do not create permanent crease marks. T-shirts, casual wear and household linen are typically folded. Shirts and formal wear are hung.
• PackagingFinished garments are packaged in breathable materials for return. Shirts are wrapped to maintain the collar and cuff press. Sarees and formal garments are folded with tissue if required.

Correct storage after laundering preserves the work done in washing and finishing, and prevents re-soiling or damage before the garment is worn again.

• Allow garments to air before storing. Even freshly laundered garments retain some residual warmth and slight moisture from finishing. Storing directly in a closed wardrobe traps this moisture and can cause mustiness.

• Hang shaped garments. Shirts, formal trousers, jackets and structured garments should be hung on appropriate hangers to maintain the pressed shape. Folded hanging creases the collar and sleeves.

• Fold knits and jersey. Heavy knits hung in a wardrobe stretch under their own weight. Fold and store flat on a shelf.

• Separate whites from colours in storage. Even clean garments transfer colour to adjacent whites if stored in contact over time, particularly in warm and humid conditions.

• Do not over-pack a wardrobe. Garments pressed together lose their finish and develop permanent creases. Adequate spacing maintains the press.

• Use breathable garment covers for formal wear. Cotton or muslin covers protect stored formal garments from dust and light. Plastic covers trap moisture.