How Long Does Semi-Permanent Hair Dye Last (And Why)?

Exact Answer: 4-6 Weeks

The majority of semi-permanent dyes will last 4-6 weeks, with some tones, such as blues and greens, lasting much longer. With each wash, the color will begin to fade gradually.

Semi-permanent hair colors can act as a gloss, adding sheen and luster to the hair while hiding greys, revitalizing drab locks, or simply changing up the look when it’s time for a change.

How Long Does Semi-Permanent Hair Dye Last?

Semi-permanent dyes don’t include peroxide or ammonia, so they won’t harm the hair. Unlike other colors, semi-permanent hair dye does not change the color of the hair fundamentally. Instead, it simply coats the hair shaft’s surface. This results in an easy-on, easy-off solution with only temporary and reversible effects.

Semi-permanent coloring washes out fully over time. This is due to the fact that it does not form a permanent bond with the hair strands. It’s a good idea to apply a touch-up color every few weeks if you need a fresh hair color and doesn’t want it to fade.

The longer a color procedure is kept on the hair, the more susceptible it is to tonal shifts. Almost all colors fade with time, and some are more vulnerable than others, whether it’s due to minerals in your shower water, UV damage from sun exposure, or abuse of heated styling equipment.

How you plan on maintaining the hair is dependent on how you care for your hair. But it’s not just what you use to wash your hair that affects color fade; it’s also how often you wash it.

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In most colors, if someone wants a new color or wants to recover their natural hair color, they can expect a complete color reversal in two months or less.

In Summary:

  Semi-permanent hair dye colorTime for fading
  Red4 weeks
  Brown6 weeks
 Blonde6-8 weeks
Cool brown2-4 weeks
Warm blonde3-4 weeks
Cool black6-8 weeks

Why Does Semi-Permanent Hair Dye Last This Long?

The duration of hair dyes all boils down to a simple formula. You may expect some brands to last anywhere from 6 to 8 washes. Permanent hair color may cover up to 100 percent of grey hair and completely transform overall appearance; nevertheless, it is a long-term commitment. Semi-permanent hair dye is the way to go if you want to enhance your natural hair. Because the color simply sits on the surface, semi-permanent dyes are less harmful to hair follicles. Because of this, they fade more quickly than permanent colors.

Casting Creme Gloss helps you to get an ultra-glossy sheen while remaining true to your natural appearance. The length of time that hair color lasts depends on the following factors:

  1. If you wash your hair in hot water, it will fade faster than if you wash it in cool water.
  2. The color will remain longer if you use color-safe shampoo and conditioner that are free of sulfates and parabens.
  3. Depending on how long the dye is left in and whether you use heat to set it.
  4. the initial state of the hair fiber (virgin/bleached, chemically treated, healthy/damaged) dye quality
  5. How frequently the hair is washed (frequent washes lead to faster fading)
  6. Which shampoo is used to wash the hair; utilize a shampoo that has a lot of cleaning power. When compared to a co-wash or a mild shampoo, sulfates will cause it to fade faster.
  7. Swimming in pools or at the beach, as well as sunbathing without a hat, will cause the color to fade faster.
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Conclusion

Semi-permanent hair dye can last anywhere from 4 to 6 weeks, depending on the type of color you apply. In general, hair dye lasts four to six weeks. As a result, it doesn’t stay on your hair indefinitely; as your hair grows out, the color loses its effect and intensity as your roots reveal.

Because the color is applied around the hair shaft rather than within it, people who choose a more commitment-free semi or demi-permanent color can expect their new look to last up to 24 shampoos.

It’s less harmful, which means it won’t last as long, but it’s ideal for tonal alterations and accenting your natural base shade. It could take anywhere from four weeks (if you shampoo every day) to several months (if you just shampoo once a week) depending on how often you wash your hair.

Reference

  1. https://www.sciencedirect.com/science/article/pii/S0378427414001283
  2. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.601.8052