How to prep hair before coloring?

Author: Gladys Dietrich  |  Last update: Thursday, September 4, 2025

Along with washing your hair right before dyeing it, avoid applying any styling products, like dry shampoo or leave-in conditioners. While you can color dirty hair, styling products can contribute to buildup and may affect the way the hair dye absorbs.

What should I do to prep my hair before dying it?

How to Properly Prep Your Hair for At-Home Hair Color
  1. Deep Condition Your Hair (the Wash Day Before) ...
  2. Wash Your Hair Three Days Prior. ...
  3. Keep Product Out of Your Hair Before Coloring It. ...
  4. Dust Your Ends. ...
  5. Speaking of Your Ends, Apply the Color There Last. ...
  6. Avoid Ammonia-Based Brands (and Get More than One Box)

What not to do before hair color?

06 Skip shampooing before coloring.

Since shampooing can send some of these healthy oils down the drain, avoid cleansing for 24-48 hours before home hair coloring. The oils that you allow to build up on your hair during this time will protect your strands and keep them healthier post-color.

Should you wash your hair before coloring?

Washing your hair 24 to 48 hours before dyeing is ideal, as this allows your scalp to produce natural oils that can help protect it during the dyeing process. However, avoid washing your hair immediately before dyeing, as this can strip away those protective oils.

What should I condition my hair before coloring?

Apply color to clarified hair, whether the application is on damp or dry hair is always the best move. Hair should be clarified and NO conditioner used. Conditioner even if applying color to dry hair, can interfere with the amount of pigment deposit so be sure you skip it.

Should I wash my hair before coloring it?

How do you moisturize your hair before coloring it?

Moisturize and smoothen strands - Hair masks are like super-hydrating hugs for strands. They load up hair with the moisture it craves, which is a big deal before diving into the coloring process. Dry hair + color chemicals = potential disaster.

Should I use a clarifying shampoo before coloring my hair?

Whether you're applying at-home color or are heading to the salon, washing your hair with a clarifying shampoo the day before you add color can remove buildup, allowing for the dye to distribute more evenly.

Do hair stylists prefer clean or dirty hair for coloring?

**Stylist Preference**: Stylists prefer working with clean hair because it allows them to better assess the natural color and condition of your hair.

Should you dye your hair wet or dry?

If your hair is healthy, meaning it's not fragile and damaged, technically, you can dye it when wet. However, we recommend coloring hair when dry so you achieve a look that aligns with your desired results.

Can I dye my hair if I haven't washed it in 3 days?

As mentioned, your hair type can play a role, too. Those with oily hair may only need to wait one day between their last shampoo and next dye job. People with dry hair, meanwhile, may need 2-3 days in between to allow enough oil to build up.

What is the rule in hair coloring?

A basic rule of haircolor is that cool (ash) tones neutralize warm (red or gold) tones and warm tones neutralize cool tones. Decide if it is too red, orange or yellow, then just choose the complementary tone that is opposite on the color wheel.

Why do salons wash your hair after coloring?

Post-color washing is essential for maintaining the structural integrity of your hair. By cleansing and conditioning, salons help in closing the hair cuticles, locking in moisture, and preserving the smoothness of your locks.

How long to leave hair dye in for grey hair?

Processing time with grey hair

The pigments in the dye need more time to penetrate through that so they can do their job. So with grey hair it's also best to let the dye sit for 45 minutes from the moment you've finished applying all of the dye so you'll be sure you have enough coverage.

What should I not do before dying my hair?

What Not To Do Before Dyeing Your Hair. Along with washing your hair right before dyeing it, avoid applying any styling products, like dry shampoo or leave-in conditioners.

What happens if you put grey hair dye on brown hair?

If your hair is brown, you may need to bleach it more than once before you apply the grey dye. It's important you get your hair as light as possible before you attempt to turn it grey – this will help ensure a more even tone and vibrant, all-over colour.

Do you dye your hair dirty or clean?

“There was a time when hair color was very harsh and you needed a barrier between it and your skin,” she says. That's not the case anymore: Today, hairstylists generally prefer the hair to be clean before dyeing it.

How to prep your hair for dyeing?

You generally shouldn't shampoo immediately before coloring, because this will remove the natural oils that help protect your scalp during the coloring process. It's best to shampoo 12 - 24 hours before coloring when using semi-permanent or demi-permanent hair color. Shampoo 24 hours before using permanent color.

Do I need to shampoo before hair color?

It's best to avoid washing at least 24 hours before dyeing. However, if your hair is really dirty, has a lot of product in it, or you need to shampoo for a special occasion, you can do that – as long as it's a one-off, you shouldn't see any long-term negative effects.

Can I use conditioner before dyeing my hair?

For best results, we recommend washing your hair with a clarifying shampoo 24 hours before dyeing, but no sooner. You can use your normal conditioner, but we'd advise against using a deep conditioner before dyeing your hair due to potential product build-up.

Do hairdressers hate dirty hair?

Additionally, it's also a matter of courtesy; clean hair is usually more pleasant for stylists to work with. However, if you're going for a haircut, a little natural oil in your hair is acceptable, as it can help the stylist understand your hair's natural texture and style.

How much to tip a hairdresser?

A 20% tip may be standard, but the percentage can vary. More complex jobs or a stylist that went above and beyond might merit a bigger tip. If service was poor, a little less might be appropriate.

How to prep for a hair color appointment?

Arrive to your hair salon appointment with freshly washed, product-free hair. This allows the color to be applied evenly for the best results. Avoid using conditioner or styling products before your visit. The cleaner your hair, the better the color will deposit and stick.

Can I dye my hair right after washing it?

Where possible, you shouldn't shampoo immediately before coloring because this will remove the natural oils that help protect your scalp from any damage during the dyeing process. It's best to shampoo no sooner than 24 hours before applying color.

How many washes with clarifying shampoo to remove color?

There are plenty of benefits to using a clarifying shampoo. The main, being is if you're looking to strip your hair for a new colour, it will do just that – slowly over up to 5 washes.

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