We try to do everything to achieve the best results when planning on colouring hair at home, from buying the right hair-colouring accessories to picking up some colour-care shampoo and conditioner. However, one thing is confusing for most of us:
Should I wash my hair before colouring?
Keep reading to know the answer.
Mostly hair colour, including permanent hair dye, it is instructed to skip the wash before colouring. This is written as directions in most hair dye boxes. Applying colour to clean hair will be too “slippery” for the colour to adhere to the strands and will prevent the colour from properly absorbing into the hair’s cuticle. Unwashed hair means that your hair can be greasy or dirty but it should not be full of build up from products. Wash your hair a day before dying it.
Also, washing right before colouring your hair can leave your scalp more sensitive and the chemical dye can cause the scalp to be more prone to irritation. The natural oils in the unwashed hair act as a sort of protective layer between your scalp and the colouring chemicals.
The rule for washing hair prior hair colouring is different when it comes to semi-permanent Hair Colours. Semi-permanent colour works differently than permanent hair dyes by just coating the outside shaft of the hair instead of penetrating the shaft and being absorbed into the hair cuticle. It is best to wash your hair before colouring if you are going to be colouring with a semi-permanent colour. Clean hair shaft will make it easier for the colour to coat it.
There are some other things you can do before you apply your colour to achieve better results regardless of the type of hair colour you plan on using such as using a pre-colour treatment to help even out the porosity of your hair and coat colour properly. Using the right colouring tools, such as a mixing bowl, application brush, and gloves etc. can give best possible results. Applying Vaseline to your forehead can prevent the hair colour from staining your skin.
Remember that washing your hair before colouring is only allowed when using a semi-permanent hair colour. For permanent hair dyes, wait at least 24 hours after your last shampoo to get better results without irritating scalp.