Getting ready to colour print

Hair Colour Safety Tests

Be colour safe


Hair colour products may cause allergic reactions, which in rare instances can be serious. Do not colour if you've had a previous reaction. To help minimize your risk, it is important to perform the skin allergy test 48 hours prior to every application.

You will need cotton wool or a cotton bud, a plastic bowl and a plastic spoon.

  • To open the colourant tube (#1), unscrew cap and turn upside down. Hold tube firmly without squeezing and point the opening away from your face. Push the pointed end of the cap into the seal.
  • Mix small, equal parts of colourant (#1)- and colour Developer from Bottle 2 (about the size of a nickel) in plastic bowl.
  • Tightly recap both the colourant tube (#1) and Developer Bottle (#2).
  • Apply small amount of mixture to inside of elbow. Allow to dry. Do not wash site for 48 hours. Use remaining mixture for Strand Test (see below).
  • Examine test site during the next 48 hours. If no reaction occurs, you are ready to colour. If a rash or redness, burning or itching occurs, you may be allergic and you must not use this product. Retain the product for identification and call 0-800-181-184 (1-800-535-909 Ireland).


We recommend you do the strand test each time you colour to determine optimal timing and colour results. Perms, chemical treatments like straightening, previous colour and the sun can affect your results and timing. You will need scissors, tape, and a clock.

  • Cut a 1/4-inch strand from the root area that is generally not visible (any area NOT along the part line, temples, or hairline is best), and tape strand, exposing the root end.
  • Completely cover the exposed root end with the mixture remaining from the Allergy Test. Start timing.
  • Tightly recap both the colourant tube (#1) and Developer Bottle (#2).
  • After 10 minutes, check root end of the strand. If the root end is not the colour you want, leave colour on for an additional 5 minutes.

If during colouring you experience intense stinging or burning and/or rash, rinse immediately. Do not colour your hair again before consulting a physician. If you experience shortness of breath seek prompt medical attention.

Call the Clairol colour Experts at 0-800-181-184 (1-800-535-909 Ireland) for personal, free colour advice.