Skin Allergy Test
Do a Skin Allergy Test on a small patch of skin 48 hours before every Hair Colour application.
Using soap and water, wash an area 1 inch in diameter behind the ear. Pat dry.
Wearing gloves, mix together small amount of 1 part My Hairdresser Permanent Hair Colour and 1.5 parts of My Hairdresser Developer.
Apply the Colour mixture to test area using an absorbent cotton tip applicator. Leave on for 48 hours without washing, touching or covering.