Buy the clinically
proven Colourstart
Patch Test

Colourstart Patch Test is the UK’s only clinically proven patch test which screens for allergy to the hair colour ingredient para-phenylenediamine (PPD.)

Colourstart Test 65 micrograms Cutaneous Patch


A screening test for allergy to hair colour (PPD)
Contains p-phenylenediamine (PPD).
Colourstart should only be used by those aged 16 or over.
What you need to know before you use Colourstart.
See more details below, always read the patient information leaflet.

*Subject to the correct use and negative reaction to Colourstart Patch Test as per the Patient Information Leaflet, and an 'OK to colour hair' status in any participating Salon's Colourstart Professional Passport.


Colourstart can show whether you may be allergic to the hair colour ingredient PPD. It works by exposing the skin to a very small, controlled amount of PPD, far less than is contained in hair colour.

Colourstart should only be used by those aged 16 or over.

You must be at least 16 years old to purchase this product

  • suspect or know that you are allergic to PPD or any of the other ingredients of this medicine (See section 6).
  • if you have active dermatitis on your skin (e.g. redness, swelling, itching)
  • have previously experienced an allergy to hair colorant
  • if you are pregnant or breast-feeding
  • if you are taking oral or topical steroids and other immunosuppressant medicines
  • if you have a temporary black or if you have had any reaction to a temporary black henna tattoo in the past

Please read all of the patient information leaflet for full instructions:

Download patient information leaflet

  • Keep all medicines out of the sight and reach of children
  • Store below 25 °C in the original package
  • Use by the date on the foil pouch containing the patch

p-Phenylenediamine ((PPD) 65 micrograms, ethanol, povidine 90

In rare instances, you may become allergic to the PPD present on the Colourstart patch. This is also a risk with exposure to hair colorants containing PPD. Any reaction which occurs at the site of where the patch was applied, approximately 10 days later, may be a sign of contact sensitisation. If this happens talk to your doctor or pharmacist and DO NOT use hair colorants if this happens.

Talk to your doctor or pharmacist if you require further advice regarding use of this product or in deciding if it is suitable for you.