Which type of haircolor is formulated to last through multiple shampoos depending on hair's porosity?

Semi-permanent color is designed to provide a temporary change to hair color that typically lasts through multiple shampoos, usually around 4 to 12 washes, depending on the hair's porosity and the specific formulation of the product. This type of color does not contain ammonia and generally deposits color onto the hair without altering the natural hair structure. It can enhance the shine and depth of the natural color, and it is especially effective on porous hair that can absorb the color more readily, leading to a more pronounced result.

Hair with higher porosity will often absorb the color more effectively, resulting in a more vibrant hue that may fade quicker, while lower porosity hair may hold the color longer. This versatility makes semi-permanent color ideal for clients looking to experiment with their hair color without a long-term commitment.

While demi-permanent color is similar, it typically lasts longer and may contain low levels of ammonia to aid in better penetration and longer-lasting results. Temporary color, on the other hand, is formulated for a single wash and does not provide the longer-lasting effects seen with semi-permanent color. Permanent color, as the name suggests, changes the hair color on a more permanent basis, typically requiring a more involved application process and not fitting the criteria