How to Care for Your Scalp and Hair After Dyeing: A Professional Guide

Hair coloring is a way to refresh your look and enhance your features. Both men and women find themselves more attractive by changing their hair color. However, regular hair coloring can compromise the health of the scalp and the integrity of the hair fiber , leaving it more vulnerable to external aggressions.

To achieve soft, luminous, and long-lasting color, it's essential to follow a proper care routine from the first wash at home after applying the dye.

Types of dyes and their impact on hair

There are different types of hair coloring on the market: permanent, semi-permanent, temporary, plant-based, metallic... each one acts differently on the hair fiber.

In this guide we are going to focus on the three most commonly used types of hair coloring today:

1. Permanent dyes . These are dyes that modify the internal structure of the hair to fix the color.
2. Semi-permanent dyes . These dyes act on the surface of the fiber, on the cuticle, providing color without profoundly altering the hair structure.
3. Natural coloring: Clays . In this type of coloring, carefully selected plant powders are mixed with hot water. Since they don't penetrate the hair structure, they are washed out.

Understanding how dyes work and what effects they have on your hair is the first step to properly caring for it after coloring.

What effects do permanent and semi-permanent dyes have on hair?

Effects of permanent hair coloring

Chemicals present in permanent dyes such as PPD (P-phenylenediamine) or PTD (P-toluenediamine) act by opening the hair cuticle to deposit the color in the cortex , which weakens the fiber and can cause sensitization of the scalp.

Among the most common effects are:

• Dryness and irritation of the scalp : Chemicals can dry out the skin on your scalp, making it more sensitive and irritated.
• Brittle and dull hair: Breakage of the hair fiber to position the color makes the hair more fragile and prone to frizz.
• Allergy risk: Although the use of modern dyes does not represent a significant risk to human health under normal conditions of use, contact allergies may occur, especially in the case of permanent changes due to the use of P-Phenylenediamine, P-Toluenediamine or P-Aminophenol, hence an allergy test is recommended.

Effects of semi-permanent hair coloring

Unlike permanent dyes, semi-permanent hair color doesn't penetrate the cortex , the hair's innermost structure. Its pigments are deposited in the outer cuticle, allowing it to provide color without significantly altering the hair fiber.

Advantages:

• They do not contain aggressive oxidants .
• It is less likely to cause allergies or sensitization .
• Ideal for temporary look changes or to enhance existing tones.

Disadvantages:

• Shorter lasting . Because it adheres to the cuticle, the color fades with washing, especially if the hair is porous or dehydrated.
• Greater need for post-application care . Although Modesta Cassinello believes this isn't a disadvantage, because hair care is the best way to keep it the way we like it, and with a good routine tailored to our needs, it doesn't take that long either.

What effects does natural coloring, mud, have on hair?

Clay coloring is a plant-based alternative to dyeing your hair. It uses powders from dyeing plants like henna, indigo, and cassia, combined with hot water. It creates a paste that is applied to the hair. Sometimes the desired color is not achieved, and it is necessary to tone the color to eliminate all unwanted residues. Unlike the conventional dyes mentioned above, it does not contain ammonia, peroxides, or PPD , making it a very good option for people with sensitive scalps .

As this coloring fills the hair fiber, it thickens the hair and gives a feeling of greater density. Its maintenance is important because the deposited pigments are more easily washed away during washing . We should also be aware that prolonged exposure to UV radiation alters the color .

Post-color care: How to prolong hair color and health

Once you've applied the dye, your hair needs special attention at home. Here are expert tips for caring for color-treated hair and maintaining scalp balance.

1. Deep hydration

Color-treated hair tends to be drier, so it's very important to deeply nourish and hydrate both the scalp and hair fiber with each wash. Use nourishing ingredients like ceramides and postbiotics to soothe the scalp.

2. Wash with warm water, not hot

Hot water opens the hair cuticle, accelerating color loss. Choose lukewarm water and finish washing with cold water to close the hair scales , thus prolonging the color's intensity.

3. Avoid excessive heat

Limit the use of heat tools such as hairdryers, flat irons, and curling irons at high temperatures. Direct heat can further weaken color-treated hair.

4. Sun and environmental protection

UV rays and pollution can oxidize color and damage hair. For extended exposure, use products with active ingredients that protect against UV radiation and the heat from flat irons and hairdryers, as well as antioxidants for daily protection.

Cassinello Modest Range: Expert formulas for color-treated hair.

If you're looking for products that care for both your scalp and hair fibers after coloring, the Modesta Cassinello hair care line is your ally. This dermopharmaceutical line has been carefully formulated with innovative and active ingredients that respect the health of your scalp and enhance and prolong the beauty of color-treated hair.

Recommended products:

• H02 Repairing Shampoo : A shampoo that gently cleanses without altering the skin barrier and strengthens the hair fiber . Ideal for sensitive scalps after coloring.
• H09 Hair Mask : With jojoba oil, amino acids, squalane, hemisqualane and a very innovative active ingredient, ProShine, which provides shine and softness to the hair without weighing it down.
• H10 Sublime Oil : A multifunctional oil that provides intensive nourishment, seals ends, and protects hair from external damage. It enhances color and prevents oxidation.

At Modesta Cassinello, all products are formulated with gentle, sulfate-free cleansing agents that not only care for your hair but also protect and soothe your scalp. They are also suitable for frequent use.

Conclusion

Caring for your hair after coloring isn't optional; it's essential . A care routine or ritual that hydrates, nourishes, and protects your scalp and hair, along with products specifically designed for color-treated hair like those from Modesta Cassinello, will allow you to enjoy longer-lasting color and visibly more beautiful hair.

Want more tips or to discover the ideal routine for your color-treated hair?

Visit our blog at modestacassinello.com and get our personalized recommendations.

Frequently Asked Questions (FAQ) about Pre-Shampoo

How to care for your hair after dyeing it?

After coloring your hair, it's essential to use products that soothe the scalp and hydrate, nourish, and protect it. We also recommend avoiding direct sunlight, excessive heat, and very hot water, and using nourishing and restructuring masks when washing your hair in addition to conditioner.

What products are good for dyed hair?

Cosmetics containing ceramides, postbiotics, amino acids, hydrolyzed proteins, and vegetable oils are ideal. Effective yet gentler shampoos, conditioners, masks, and oils soothe the scalp and help maintain hair color and beauty.

How long should you wait to wash your hair after dyeing?

You can wash it whenever you want, even that same day. Once the hair is colored, dried, and styled, the treatment is complete.

How to prevent scalp damage from dye?

To determine if you have any allergies and avoid scalp damage, it's recommended to do an allergy test on the back of your wrist beforehand. If you have a sensitive scalp, we recommend avoiding harsh dyes and using soothing and restorative products after coloring your scalp and hair.

Does the sun affect dyed hair?

Yes, sun exposure oxidizes color and dries out hair. Using UV protection products to prevent color and hair fiber deterioration is essential.

Can I use a mask the same day I dye my hair?

Yes, there's no problem washing your hair the same day you dye it and using a mask after washing to restructure and protect your hair.

How often should I wash dyed hair?

You should wash your hair whenever necessary, whether or not it's color-treated. Washing your hair is intended to cleanse your scalp; an imbalance caused by excess oil and pollution can upset the skin's microbiome (bacteria, viruses, and mites that live on the scalp) and cause irritation and itching.

What is the difference between henna and hair care mud?

Henna is a specific plant with a reddish pigment, while muds are mixtures of various dye plants such as henna, indigo, cassia, or amla. Muds allow for better tone control and adaptability to the desired hair color.

How long does the color of clays last in the hair?

The color of the clay depends on the frequency of washing, the type of hair, its porosity, and the products used in the care routine.

Do pimples cover gray hair?

Clays do not offer full coverage to gray hair like a permanent dye, but they can tone it down and give it a warmer tone or reflection depending on the mixture of plants used.

Each product is backed by the expertise of Dr. Modesta , a pharmacist and founder committed to excellence in hair care.