Whether you’re new to hair colouring or a seasoned pro, one common question often arises: should hair be clean or dirty for the colouring process? Let’s clear up this confusion.
Myth #1: It’s better to dye your hair when it’s dirty.
FALSE
The idea that dirty hair is better for dyeing comes from the belief that natural oils protect the hair and scalp from the harsh chemicals in conventional hair dyes. This holds true for ammonia-based hair colours such as bleach.
However, for ammonia-free permanent colours, like the ones I use, it’s unnecessary to rely on natural oils for protection. Ammonia-free colours are designed for sensitive skin and a healthy scalp, and they actually perform best on clean hair due to their more gentle formulation. This also means so skip your at-home grey-concealing spray or powder before your colour appointment for optimal results.
The only time I recommend not washing your hair beforehand is when getting a solid bleach application, as natural oils can help protect your scalp.
Myth #2: Hair colour adheres better to clean, freshly washed hair.
TRUE
When hair is free of product build-up, dirt, and oil, the colour can adhere more effectively and quickly. Freshly washed hair provides a better canvas for even coverage and application, ensuring the colour is absorbed consistently, which is crucial for grey coverage and more detailed work like highlighting.
In Conclusion: Keep it Clean
For optimal results, see me with clean, freshly washed hair.
If you’re having a solid bleach service, dirty hair is preferred as it can help protect the scalp from potential damage and irritation due to your natural oils.
