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

logo by Editorial Staff | Updated on August 5th, 2022

Exact Timeframe: 4-6 Weeks

Most semi-permanent dyes have a 4-6 weeks lifespan, with some tones, such as blues and greens, lasting considerably longer. The color will progressively fade with each wash.

woman with blue hair in blue long sleeve shirt

What Is the Definition of Semi-Permanent Hair Dye?

Semi-permanent hair color is used to modify hair’s natural tint temporarily. The semi-perm dye coats the surface of the hair shaft. As a result, unlike permanent colors, these dyes do not fundamentally alter the color of the hair.

Most individuals consider semi-permanent dye since it is simple to apply and remove. Furthermore, these dyes may be mixed with various hues and tones.

What exactly is the distinction between permanent and semi-permanent hair dye?

Semi-permanent and permanent hair dyes differ in various ways. One distinction is the chemical makeup. In addition to being vegan and, Leaping Bunny cruelty-free certified, our semi-permanent colors are devoid of peroxide and ammonia, which means they won’t harm your hair.

Semi-permanent hair dye, as previously said, does not fundamentally affect the color of your hair. Instead, it just covers the hair shaft’s surface. This results in an easy-on, easy-off solution with only short-term and reversible effects.

The Advantages of Semi-Permanent Dyes

After a few weeks, the color completely fades.

Semi-permanent hair colors, like hair masks, contain a high-quality cream basis. Color does not stay more than six weeks.

Semi-Perms Can Be Mixed With Other Colors

Semi-permanent hair colors can be mixed with other colors to produce a unique color.

A semi-permanent color does not harm the hair.

You don’t have to be concerned about hair damage. Semi-permanent dyes are free of parabens, peroxide, and ammonia. Furthermore, unlike permanent hair colors, these colors are vegan and cruelty-free.

Hydrate the hair strands

Semi-permanent hair colors can hydrate and nourish the hair. These colors are typically fortified with essential oils and vitamins A, C, and E.

Provides Results Quickly

If you need to color your hair quickly, use semi-permanent hair dyes. Simply leave it on for 30 minutes to get the desired color shift.

Is semi-permanent hair color bad for your hair?

No! Our semi-permanent hair color is gentle on your hair because it contains no harsh or permanent ingredients.

Our semi-permanent dyes contain Sunflower Extract and other essential oils, as well as Vitamins A, C, and E to help maintain hair while it is dyed. This also makes it suitable for use on professionally relaxed or permed hair.

Will my hair return to its natural color after using semi-permanent hair dye?

Because semi-permanent dye does not fundamentally alter the color or structure of your hair, you may anticipate your hair color to restore to its natural form after use. As with any hair dye, you’ll notice that the color fades gradually until fully disappearing.

Will semi-permanent hair coloring remove the color?

Yes! Semi-permanent coloring washes away fully over time. This is because it does not form a lasting bond with the hair strands. If you enjoy your new hair color and want to keep it from fading, a touch-up color every few weeks is an excellent idea.

If you desire a new color or wish to restore your previous hair color, most colors may be completely reversed in two months or less.

What is the lifespan of semi-permanent hair dye?

Semi-permanent colors do not include peroxide or ammonia. Thus they are not harmful to the hair. Semi-permanent hair dye, unlike other hues, does not fundamentally alter the color of the hair.

Instead, it just covers the surface of the hair shaft. Consequently, the treatment is simple to apply and remove, with only transient and reversible effects.

Semi-permanent coloring fades completely with time. This is because it does not make a lasting link with the hair strands. If you need a new hair color and don’t want it to fade, use a touch-up color every few weeks.

The more time a color treatment is left on the hair, the more prone it is to tonal alterations. Almost all colors fade with time, and some are more susceptible than others, whether owing to minerals in your shower water, UV damage from sun exposure, or misuse of hot styling products.

How you want to retain your hair is determined by how you care for it. However, it is not just what you use to wash your hair that impacts color fading; it is also how frequently you wash it.

In most cases, if someone wishes to change their hair color or restore their original hair color, they may expect a complete color reversal in two months or less.

In conclusion:

  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

What Causes Semi-Permanent Hair Dye to Last So Long?

It all comes down to a simple formula when it comes to the lifetime of hair dyes. Some brands may be expected to endure between 6 and 8 washes. Permanent hair color may cover up to 100% of grey hair and fully modify one’s look; nevertheless, it is a long-term commitment.

If you want to improve your natural hair, semi-permanent hair color is the way to go. Semi-permanent dyes less damage hair follicles since the color sit on the surface. 

As a result, they fade faster than permanent colors.

The duration of hair color relies on the following factors:

  • When you wash your hair in hot water, it fades faster than when you wash it in cold water.
  • The color will last longer if you use color-safe shampoo and conditioner that is free of sulfates and parabens.
  • Depending on how long you leave the color in and whether or not you use heat to solidify it.
  • the fiber’s original condition (virgin/bleached, chemically processed, healthy/damaged), the standard of dye
  • How frequently is the hair washed? (frequent washes lead to faster fading)
  • Which shampoo is used to wash the hair; a shampoo with a lot of cleansing power should be used. Sulfates will cause it to fade faster than a co-wash or a light shampoo.
  • Swimming in pools or at the beach, as well as sunbathing without a cap, will accelerate the fading of the color.

How to Extend the Life of Semi-Permanent Hair Color

Follow these techniques if you want to extend the life of your semi-permanent hair color.

Improve the Dyeing Process

You may enhance the porosity of your hair by washing it without conditioner. More pigment from the semi-permanent dye will be trapped. Before coloring it, make sure it is absolutely dry.

After you’ve applied the color, add some heat with a blow dryer or walk outside in the sun. This process aids in the development of the color throughout your hair. When it’s time to wash out, rinse with cold water to remove the color.

Skip the washing and use dry shampoo instead.

We’re not proposing that you stop using shampoo. However, you should only shampoo your hair once or twice weekly to keep the color from fading. To eliminate greasiness, use a dry shampoo to remove excess moisture from your scalp.

Some manufacturers provide colored dry shampoos, which can help you reintroduce color as the dye fades.

Maintain your conditioning routine to keep your hair smooth without removing the color.

Make use of a color-safe shampoo and conditioner.

Color-depositing shampoos and conditioners replenish the color in your hair with each wash, allowing you to keep the color longer. These products keep your hair looking fresh while concealing fading semi-permanent color.

If you have any leftover dye, you may mix it into your usual shampoo and conditioner to deposit color back into your hair as you wash. It can be used with a moisturizing lotion to help counteract the drying effects.

Avoid Risky Products and Situations

Color-depositing products might be pricey, although color-safe shampoos and conditioners are widely available. To keep your natural oils, look for one that does not include sulfates. Also, try to use hot tools as little as possible. Color is faded by blow drying, flat ironing, and curling.

Make use of a heat protectant and look for heatless styling solutions. A day at the pool may seem appealing, but the chemicals and sunlight might cause your color to fade. You may reduce damage by using a hair treatment that protects your hair, wearing a hat, or wearing a swim cap.


Depending on the type of color you choose, semi-permanent hair dye can last anywhere from 4 to 6 weeks. Hair color typically lasts four to six weeks. As a result, it doesn’t last forever; as your hair grows, the color loses its impact and intensity as your roots show.

Because the color is put around the hair shaft rather than within it, those who opt for a less-committal semi-permanent or demi-permanent color may anticipate their new appearance to last up to 24 washes.

It’s less damaging so it won’t stay as long, but it’s great for tone changes and accentuating your natural foundation color. Depending on how frequently you wash your hair, it might take anywhere from four weeks (if you shampoo every day) to several months (if you only shampoo once a week).


Editorial Staff

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