Most people assume all hair dye works the same way. Apply it, wait, rinse, done. The difference, they think, is just the brand name on the box.
It is not. The difference is chemical - and it is significant.
What actually happens when you color your hair
Hair has three layers. The outermost layer is the cuticle, a protective shield of overlapping scales, like roof tiles, that surrounds the hair shaft. Beneath it is the cortex - the inner structure that contains melanin, your hair's natural pigment, and determines its strength and elasticity. At the center is the medulla, which plays little role in color.
For a hair color to last, the pigment needs to reach the cortex. Not sit on top of the cuticle - inside it.
This is where professional and drugstore color diverge completely.
How drugstore color works
Drugstore hair colors use the same basic principle: alkaline base, oxidative developer, pigment molecules. But the formulas are significantly different in execution.
The developer concentration is lower, and the alkaline agents are less precise. The cuticle opens, but not fully, and the oxidative process does not penetrate deeply enough to properly alter the cortex. The color molecules are larger and coarser, and they deposit primarily in and around the cuticle rather than bonding inside the cortex.
Think of it this way. Painting a wall with a brush leaves color on the surface. The paint sits there, looks good initially, and chips or fades over time. Professional color is more like staining the wood - the pigment goes into the material itself. Surface conditions - washing, heat, sunlight - affect it far less because the color is not on the hair, it is in it.
Drugstore color also typically lacks the conditioning and protective agents found in professional formulas. The process is more aggressive on the hair structure, with less built-in repair. Over time, repeated use leaves hair progressively more porous and damaged - which, paradoxically, makes the color fade even faster, because damaged hair cannot hold pigment effectively.
How professional color works
Professional hair colors, including Maxima Plex, Jungle Fever, and NHP, use a two-stage process.
In the first stage, an alkaline base opens the cuticle, lifting those overlapping scales apart. Simultaneously, the oxidative agents, activated by the developer, break down the existing melanin in the cortex. This is what makes lifting and lightening possible. The hair's own pigment is not just covered - it is chemically altered.
In the second stage, the new color molecules enter the open cortex and bond chemically to the hair's internal structure. When the process is complete and the cuticle closes, those pigment molecules are locked inside - not sitting on the surface waiting to be washed away.
The result is color that behaves like part of the hair, because chemically, it is.
Professional formulas also contain conditioning and protective agents that compensate for the chemical process - repairing bonds, sealing the cuticle, and maintaining the hair's structural integrity throughout. This is not a luxury feature. It is a necessity, built into the formula.
The practical difference
Professional color lasts longer. Not marginally, significantly. The pigment bonds inside the cortex degrade slowly and evenly, which means color fades gradually and naturally rather than suddenly looking flat or brassy.
Professional color lifts more predictably. Because the oxidative process penetrates properly, the result is consistent from root to tip - not patchy or uneven.
Professional color damages the hair less. The conditioning agents in professional formulas actively repair and protect during the coloring process. Drugstore formulas leave the hair more vulnerable.
And professional color gives you more control. The developer strength, the mixing ratio, the processing time - all of these variables can be adjusted. Drugstore box color offers none of this flexibility.
What this means at home
Professional hair color was designed for trained colorists, but that does not mean it cannot be used at home. It means it should be used correctly.
The key differences from a box dye are the developer - which must be matched to the color and the desired result - and the finishing step. Acid Therapy Shampoo, used immediately after coloring, closes the cuticle and seals the color in. It is the step most people skip, and the one that makes the difference between color that lasts six weeks and color that starts fading after two.
Prolas carries the full range of Maxima Plex, Jungle Fever, and NHP professional hair colors - the same lines used in salons across Europe, available for home use. Browse by shade to get everything you need.