Have you noticed a curious phenomenon: the more high‑end a garment is, the more prone it is to colour bleeding. Look at luxury‑brand apparel — they are all delicate pieces. They demand meticulous care; otherwise, they will look worn‑out after only a few wears. That is what true luxury is like!
Why do some branded garments bleed colour so easily?
Answer: Summer wear or next‑to‑skin apparel from well‑known brands often suffers from colour bleeding, including solid‑colour styles and multi‑colour printed items. Conventional reasoning would suggest branded clothing should have satisfactory colour fastness.
With advances in technology, manufacturers of premium apparel frequently select dyes closer to natural components. Such dyes feature relatively poor colour fastness, yet they are non‑toxic to humans and eco‑friendly.
Do not soak or pile these garments for extended periods, and avoid washing them at high temperatures. Non‑azo dyes are widely used today. Textiles printed and dyed with certain non‑azo dyes exhibit inferior colour fastness. Both dyed fabrics and printed fabrics may bleed colour during laundering. This issue mostly occurs with summer garments and next‑to‑skin apparel, and is more common in women’s wear. Wash these items with neutral detergents. Complete washing operations swiftly and continuously. Do not soak or pile garments in water, and never use hot water.
What fabrics tend to bleed colour?
Expert Answer:
Colour bleeding during washing follows certain patterns. Textiles made from natural fibres bleed colour more readily than those made from chemical fibres, especially synthetic fibres. Cotton, linen, silk and wool textiles are more susceptible to colour loss than polyamide, polyester, acrylic and similar fabrics.
Silk and cotton rank highest for colour‑bleeding tendency. Next, heavily‑dyed and brightly‑coloured textiles are prone to bleeding.
Black, deep shades, bright red, vivid green, brilliant blue, striking purple and similar hues bleed easily; light‑coloured and muted‑tone textiles are far less likely to lose colour. For instance, a heavy pure‑wool overcoat in bright magenta will almost certainly bleed colour, whereas an identical acrylic overcoat will not. Similarly, a black silk dress is bound to bleed in water, while an equivalent polyester dress barely bleeds at all.
Washing methods to prevent colour bleeding and fading
Colour loss of dyed fabrics relates to dye properties and printing‑dyeing techniques. Most conventional dyes dissolve readily in water, particularly soapy water, hot water and alkaline water. Dyes also fade under sunlight when fabrics are damp.
To preserve colour, wash in cold water using neutral detergents such as silk‑specific detergent, shampoo or dish soap. Do not use laundry powder, bar soap or hot‑water soaking.
Wash dark‑coloured and light‑coloured garments separately to avoid cross‑staining. Add a small spoonful of salt per bucket of lukewarm water for washing; never use high‑temperature water.
Rinse thoroughly with clean water immediately after washing. Do not leave soap or alkaline detergent residues on fabrics via prolonged soaking.
Air‑dry in a cool, well‑ventilated area; avoid direct sunlight exposure.
The science behind garment colour bleeding
Why do clothes bleed colour? Simply put: insufficient colour fastness. For printing and dyeing professionals, poor colour fastness stems from diverse causes. Common colour‑fastness properties include soap‑washing fastness, rubbing fastness, light fastness, bleaching / redox fastness, ironing fastness, perspiration fastness and perspiration‑light combined fastness. Among these, soap‑washing, rubbing, light, water and perspiration fastness are top‑priority indicators for textile practitioners.
Colour‑fastness standards
Colour fastness refers to a fabric’s resistance to various stresses during manufacturing and end‑use. Samples are laboratory‑tested and rated for colour change and staining. Assessment relies on internationally‑standard grey scales for colour change and staining. The grey scale spans five principal grades from Grade 1 (worst) to Grade 5 (best), with half‑grades in‑between, known as the “five‑grade nine‑step system”.
A Grade‑4 rating signifies minimal deviation. Most industry specifications target Grade 4 or Grade 3‑4. For both colour difference and colour fastness, Grade 4 is generally considered acceptable.
Categories of colour fastness
Soap‑washing fastness
Garments require laundering with detergents, so soap‑washing fastness is one of the most critical colour‑fastness indicators. Soap cleaning works via surfactant activity that lowers water surface tension to improve water penetration, alongside emulsification to disperse oily soils into rinse water.
During dyeing, dyes bond with fibres. Some dyes form stable covalent chemical bonds with fibres. Other dye molecules merely sit loosely on fibre surfaces. These weakly‑bound dyes detach in soapy water and bleed into wash‑water. Poor soap‑washing fastness means inadequate dye fixation; garments become patchy after washing.
Rubbing fastness
Rubbing fastness covers dry rubbing fastness and wet rubbing fastness. When fabrics rub against other surfaces, colour transfer occurs in two ways: loose dyes rub off onto contacting materials, or dyed fibre fragments detach and adhere to other surfaces. Rubbing fastness is a mandatory test for nearly all textile fabrics.
Wet‑rub colour loss is mostly caused by surface loose colour. Excess loose colour arises from two main factors: inferior dye uptake and dye over‑saturation. Deep‑shade formulations often apply high‑concentration dyes that readily leave surplus surface colour.
Dry‑rub colour loss frequently appears on napped and brushed fabrics. Their raised, rough surfaces generate high friction, releasing lint and surface colour. Smooth‑surface fabrics generally perform well in dry‑rub testing.
Light fastness
Photofading is complex: dyes absorb photons, become excited and undergo photochemical reactions that break molecular structures, producing discolouration and fading. Textile light fastness depends primarily on dye chemical structure, aggregation state, bonding condition and colour‑matching combinations. Appropriate dye selection is essential.
Fabric substrate also influences light fastness. For example, silk degrades under excessive sunlight. Light‑toned articles such as off‑white and cream are light‑sensitive and prone to light‑fastness defects.
Perspiration fastness
Perspiration fastness evaluates fabric colour change and staining to adjacent fabrics under pressure and temperature in histidine‑containing test solutions. Next‑to‑skin summer textiles are heavily exposed to sweat, so perspiration performance must be considered in production.
Saliva fastness
Saliva fastness is a special test for infant textiles. Infants may suck or chew fabrics. Saliva contains water, carbonates, phosphates and proteins. This standard prevents dyes or hazardous substances from being extracted by saliva and ingested, safeguarding infant safety.
Post time: Sep-07-2026