Ace the Illinois Cosmetology Exam 2026 – Glam Up and Shine Bright!

Permanent hair color is the best choice for grey coverage because it contains a higher level of ammonia or other alkaline agents that allow the color to penetrate the hair shaft more effectively than other types. This penetration is crucial for achieving complete and long-lasting coverage of grey hairs, ensuring that the color stays vibrant and does not wash out easily.

When applied, permanent hair color can lift the natural pigmentation in the hair while simultaneously depositing new color, which is particularly important for grey or white hair that often resists color. Moreover, the results are typically durable, lasting until the hair grows out and needs to be re-colored. This makes it ideal for anyone looking for a reliable solution to cover a significant amount of grey.

In contrast, semi-permanent and demi-permanent hair colors are less effective for complete grey coverage, as they do not contain ammonia and generally do not lift the natural pigment. Temporary hair color typically offers the least commitment, as it only coats the outer layer of the hair and washes out after a few washes, making it unsuitable for effective grey coverage.