How To Wash Hair Colour Out? Step by Step

Washing hair colour out sounds simple, but doing it wrong is why so many people end up with faded, brassy, or uneven results. The process depends entirely on what kind of colour you used, how long it has been on your hair, and what your goal is. If you are trying to remove semi-permanent dye, the method is different from washing out a permanent colour you just applied. Here is the direct answer: for fresh permanent colour, rinse with cool water until the water runs mostly clear, then apply conditioner only — no shampoo for 48 hours. For semi-permanent colour you want gone, use a clarifying shampoo or a vitamin C treatment. For permanent colour you regret, you need a colour remover, not more washing.

What Is the Correct Way to Rinse Out Fresh Hair Colour?

The moment you finish applying colour, your cuticles are open and vulnerable. Rinsing incorrectly can strip colour before it has bonded. Start with lukewarm water — not hot — and rinse until the water runs clear. This usually takes three to five minutes of continuous rinsing.

Do not scrub your scalp aggressively. Use your fingertips to gently massage the colour away from your roots. Once the water runs clear, apply a colour-safe conditioner. Do not use shampoo for at least 48 hours. Shampoo strips the outer layer of the hair cuticle and will pull out colour molecules that are still settling.

Studies on hair dye retention show that waiting 48 to 72 hours before the first shampoo significantly prolongs colour vibrancy. The conditioner helps seal the cuticle and restores pH balance after the alkaline dye process.

How To Wash Hair Colour Out If You Want to Remove It?

This is where confusion starts. Washing hair colour out to remove it is different from rinsing it out after application. If you have semi-permanent dye that you want gone faster, you need to open the cuticle and let the colour molecules escape. Standard shampoo does this poorly because it is designed to be gentle.

Clarifying shampoo is your first option. It contains stronger surfactants that lift colour from the hair shaft. Wash your hair with clarifying shampoo three to four times in one session, letting each wash sit for three to five minutes. This can fade semi-permanent colour by 30 to 50 percent in one go.

For more stubborn removal, a vitamin C treatment is widely reported as effective, though clinical evidence is limited. Crush about 10 to 15 vitamin C tablets into a powder, mix with a small amount of clarifying shampoo to form a paste, apply to damp hair, cover with a shower cap, and leave for 30 to 60 minutes. Rinse thoroughly. Many people report significant fading, especially with reds and purples.

Does Washing With Hot Water Remove Hair Colour Faster?

Yes, hot water opens the hair cuticle and allows colour molecules to wash out more easily. This is why stylists tell you to rinse with cool water after colouring. Hot water accelerates fading for both semi-permanent and permanent dyes.

However, using hot water alone will not remove significant amounts of permanent colour. It will make your colour fade faster over time, but it is not a removal method. If your goal is to preserve colour, always rinse and wash with cool or lukewarm water. If your goal is to fade unwanted colour, hot water combined with clarifying shampoo is a reasonable approach.

Current research suggests that water temperature alone accounts for about 10 to 15 percent of colour fading over multiple washes. The bigger factor is the shampoo formulation and how often you wash.

What Shampoos and Products Actually Strip Colour?

Not all shampoos are equal when it comes to colour removal. Clarifying shampoos contain sodium lauryl sulfate or sodium C14-16 olefin sulfonate, which are strong detergents. These ingredients are effective at lifting colour. Anti-dandruff shampoos containing selenium sulfide or zinc pyrithione can also fade colour faster because they are designed to remove buildup from the scalp.

Avoid shampoos labeled “color-safe” or “sulfate-free” if your goal is removal. These are formulated to do the opposite — they preserve colour. If you are trying to wash out colour you dislike, reach for a clarifying shampoo from a drugstore brand. Neutrogena Anti-Residue Shampoo and Suave Daily Clarifying are commonly mentioned in consumer reports as effective for fading dye.

Baking soda is frequently recommended online as a colour remover, but it is damaging. It has a high pH of around 9, which opens the cuticle aggressively and strips natural oils. It can remove some colour, but it also leaves hair brittle and porous. As of 2026, there is no clinical evidence supporting baking soda as a safe or effective colour remover compared to proper products.

How To Wash Out Permanent Hair Colour Using Colour Removers

If you have permanent dye and you want it gone, washing with shampoo alone will not work. Permanent colour penetrates the cortex of the hair shaft. It does not sit on the surface like semi-permanent dye. You need a colour remover that shrinks the dye molecules so they can be rinsed out.

Products like Color Oops and L’Oréal Effasol work by reversing the oxidation process that locks colour into the hair. You apply the product, let it process for the specified time — usually 20 to 30 minutes — and then rinse thoroughly. The colour molecules become water-soluble again and wash out.

This process is not the same as bleaching. Bleach removes pigment by destroying melanin. Colour removers simply shrink dye molecules. They are less damaging but still drying. After using a colour remover, your hair will likely feel rough and porous. A deep conditioning treatment is essential afterward, not optional.

One important detail: colour removers often leave hair with a warm or orange undertone. This is because they remove artificial pigment but leave natural undertones behind. You may need to follow up with a toner or a new colour application to get the shade you want.

What Mistakes Ruin the Colour Washing Process?

The most common mistake is scrubbing too hard. Aggressive scrubbing does not remove more colour. It damages the cuticle and causes uneven fading. Always use gentle pressure with your fingertips, not your nails.

Another mistake is using dish soap. This is a popular internet hack, but dish soap is formulated to cut grease, not remove hair dye. It strips natural oils aggressively and can leave hair straw-like. Some people report it works for removing semi-permanent colour, but the damage is not worth the marginal benefit.

Washing too frequently is also counterproductive. If you wash every day to fade colour, you also strip your scalp’s natural barrier. This can lead to dryness, irritation, and even increased oil production as your scalp tries to compensate. Stick to washing every two to three days if you are trying to fade colour gradually.

• Do not use hot water alone and expect results — combine with clarifying shampoo
• Do not mix multiple removal methods in one session — pick one and stick with it
• Do not skip conditioner after any removal treatment — your hair needs moisture
• Do not expect permanent colour to wash out completely — it rarely does

Frequently Asked Questions