British Society of Cutaneous Allergy (BCSA)

Disperse Blue 106/124

What are the aims of this patient information leaflet?

This leaflet has been written to help you understand more about your contact allergy. It tells you what a contact allergy is, what causes this allergy and what you can do about it.

What is contact allergy?

Dermatitis, also known as eczema, describes a type of inflammation of the skin. Contact dermatitis or contact eczema is a term used when this inflammation is caused by direct or indirect skin contact with something in your environment. Allergic contact dermatitis occurs when your immune system causes allergy to a very specific chemical or substance that has been in contact with the skin.

What causes your specific allergy?

Your patch tests indicate that you have a contact allergy to Disperse blue 106/124.

What is Disperse blue 106/124?

Disperse dyes 106 and 124 are chemicals which are added to textiles and fabrics (such as clothing and bedding) to create colours. They are partly soluble in water. These two dyes are mainly used to dye synthetic textiles such as polyester and acetate, although they can also be used to dye blended and natural fabrics. They may be found in any dark colour including: green, violet and purple shades, not just blue fabrics.

What are some products that contain Disperse blue 106/124?

  • Polyester, acetate and polyester/ acetate blends that are blue, black, brown, green, violet and purple
  • Lycra/ spandex exercise clothing in the above colours
  • Dark nylon tights, stockings and pop socks
  • Transfers used for printing fabrics.

Remember, always check the label, these lists can never be complete and ingredients change.

How can I manage my allergy?

This means that you should avoid putting products containing Disperse blue 106/124 onto your skin in the future.

  • Wash all new dark clothing and bed linens at least twice before use
  • Replace dark-coloured linings of clothing with white
  • Wear 100% natural-based fabrics such as silk, wool, linen, cotton, hemp or bamboo
  • White or very pale synthetic fibres will usually be fine to wear
  • Wear loose-fitting garments.

Self-care (what can I do?)

Always check the ingredient listing on the product, package or package insert as these lists can never be complete and ingredients change. This is particularly important for any products purchased outside the EU where some allergens may not be banned.

Created: 2016