Hair dye fades because every wash, every moment in the sun, and every pass of the flat iron removes a little pigment from the fiber. You cannot stop it completely, but you can slow it down: wash with lukewarm water and products designed for color-treated hair, seal the cuticle with conditioner or a hair mask, and protect your hair from the sun and heat.
For permanent dye to work, the mixture opens the cuticle—the layer of scales covering each strand—and lets the pigment enter the cortex. Afterward, that cuticle does not return to being as flat as before. The hair becomes more porous: it absorbs water easily and releases it just as fast, and color molecules escape with it. A raised cuticle also reflects less light, which is why hair looks dull even if the tone is still there. You can notice it like this:
Bleached or highlighted hair goes through a more aggressive process and usually adds breakage to all of this. If this is your case, also read the damaged hair guide.
The Shine Protection line is formulated with raspberry vinegar for color-treated or dull hair.
This is the question we are asked most often about this line. The Shine Protector Vinegar is not kitchen vinegar, nor is it used as such: it is a rinse lotion with a balm-like texture, silicone-free, and enriched with raspberry vinegar.
It nourishes the hair without weighing it down, helps with color-related damage, and protects its radiance. The hair is left flexible and shiny. It is designed for color-treated or dull hair.
Vinegar has a mild pH, close to that of the hair itself. Applied at the end of the wash, it helps the scales of the cuticle, the outermost layer of the hair, to lay flat. A smoother cuticle reflects light better, which is why the hair looks shinier. Since it contains no silicones, that shine does not depend on a film that builds up wash after wash.
Each does a part. The shampoo cleanses: it removes oil, pollution, and the remains of conditioner, styling creams, and silicones that accumulate wash after wash. The vinegar comes after and does something else: with its mild pH, it smooths the cuticle, helps remove minerals left by the water, and leaves the fiber smooth. On that fiber, the mask and creams you apply during the week are distributed more evenly.
Water leaves minerals in the hair, especially calcium and magnesium: the more it contains, the "harder" it is. In large cities, tap water is soft. The Bogotá Aqueduct classifies it as soft, and EPM reports in Medellín (July 2026) and Emcali in Cali (December 2024) show around 30 mg/L of hardness, far from the 120 mg/L threshold where it is usually considered hard. Well water and water in some municipalities can be harder, and that is where the shine vinegar makes more of a difference.
What reaches every shower is chlorine. Aqueducts add it to make the water safe: in Medellín, 1.1 mg/L on average; in Cali, around 2. It is necessary, but it dries out and dulls color, especially in color-treated hair. That is why it is worth finishing every wash by smoothing the cuticle and nourishing the lengths.
You can alternate it with the mask depending on what your hair needs: the vinegar when you want shine and the mask when you feel it is dry.
It comes in a 50 mL mini to try or for travel, in 150 mL, and in 400 mL if it is already part of your routine.
Color loss is a cosmetic issue. Consult if, after dyeing, you feel burning, strong itching, redness, or swelling on your scalp, forehead, or ears, because it could be a reaction to the dye, and do not apply it again without evaluation. Also consult if you notice excessive shedding or areas with less hair, or if the hair breaks near the root.
As often as your scalp requires. If it doesn't get oily quickly, spacing out washes helps the color last longer.
Lukewarm water during the wash and a cooler final rinse help.
Yes, with a heat protectant, on dry hair, and at the lowest temperature that works for you. High heat fades color faster.
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