Difference between Semi Permanent and Demi Permanent Hair Colour
Hair colouring is a popular beauty routine that allows individuals to experiment with different shades and styles. However, not all hair dyes are created equal, and it’s essential to understand the differences between semi permanent and demi permanent hair colour. Both types of hair dyes offer unique benefits and considerations, which can help you make an informed decision when choosing the right product for your needs.
Semi Permanent Hair Colour
Semi permanent hair colour is designed to last for several washes, typically around 6-8 washes. This type of hair dye does not contain ammonia, which means it is less harsh on the hair and does not penetrate the hair shaft as deeply as demi permanent hair colour. Instead, semi permanent hair dye coats the hair shaft with a film, which washes out gradually over time.
The primary benefits of semi permanent hair colour include:
1. Temporary colour: It is a great option for those who want to experiment with a new shade without making a long-term commitment.
2. Low ammonia content: It is gentler on the hair, making it a suitable choice for those with damaged or fine hair.
3. No ammonia smell: It is free from the strong, unpleasant ammonia smell that is often associated with hair dyes.
However, there are some limitations to consider:
1. Limited shade range: Semi permanent hair dyes usually offer a limited range of shades, which may not cater to all preferences.
2. May not cover grey: It may not be as effective as demi permanent hair colour in covering grey hair.
Demi Permanent Hair Colour
Demi permanent hair colour is a more intense option that provides longer-lasting results. It contains ammonia, which allows the dye to penetrate the hair shaft and alter the natural pigment. This type of hair dye typically lasts for 25-30 washes before fading.
The benefits of demi permanent hair colour include:
1. Long-lasting results: It is a great choice for those who want to maintain a consistent shade for an extended period.
2. Coverage of grey: It is effective in covering grey hair, making it a popular choice for those looking to achieve a natural-looking result.
3. Wide shade range: Demi permanent hair dyes offer a broad range of shades, catering to various preferences and needs.
However, there are some drawbacks to consider:
1. Ammonia content: It can be harsh on the hair, leading to potential damage, especially for those with fine or damaged hair.
2. Strong ammonia smell: The ammonia content may result in an unpleasant smell during the application process.
Conclusion
In conclusion, the difference between semi permanent and demi permanent hair colour lies in their longevity, ammonia content, and the intensity of the hair dye. Semi permanent hair colour is a gentle option for temporary, low-commitment shades, while demi permanent hair colour offers long-lasting results and effective grey coverage. When choosing the right hair dye, consider your hair type, desired outcome, and personal preferences to make the best decision for your needs.
