Dull Hair After Coloring

Woman with hair that looks dull
Photo: Stanislav Popov/Shutterstock
Q: My hair always looks dull after it has been colored. What can I (or the hairdresser) do to make it look better?
 
A: Well, a good after-color conditioner to help lower the hair's pH, smooth the cuticle layer, and seal in the color will give the hair added shine. But in some cases, the hair needs something extra.
 

Glosses and Glazes

When this is the case, your stylist should consider an acidic gloss or glaze. Glaze treatments are non-ammonia, deposit-only processes that add either clear or tinted shine elements to the hair instead of traditional permanent color.
 
The shine enhancers help to fill in microscopic gaps in the cuticle and increase the level of reflectivity of the hair, leaving it shinier and healthier-looking as a result. With tinted formulas, you can even boost the vibrancy of colors if you've experienced color fade.
 

Pre-Color Condition & Porosity

Another thing to consider is the condition of your hair before it is colored. Hair that is already dry, porous, or damaged tends to absorb color unevenly and reflects less light, making it appear dull even when the color itself is beautiful.
 
In these cases, a stylist may recommend an equalizing porosity spray or a bond-building treatment (such as Olaplex or K18) before or immediately after coloring to strengthen the hair shaft and create a smooth canvas.
 

Choosing the Right Type of Color

The type of hair color used can also make a difference. Permanent hair color is excellent for long-lasting results and gray coverage, but its higher alkalinity can leave hair feeling drier than demi-permanent formulas.
 
If you're only refreshing your existing shade or deepening your color slightly, ask your stylist whether an acidic demi-permanent color or gloss would achieve your goal while maintaining a softer, shinier finish.
 

Avoiding Over-Processing

Your hairdresser should also avoid over-processing your hair. Applying permanent color to previously colored lengths over and over again can cause unnecessary damage to the hair's natural lipid layer, making the cuticle permanently rough and reducing shine.
 
Most of the time, only the new growth needs permanent color, while the previously colored hair can simply be refreshed with a gentle, acidic gloss or toner.
 

Managing Hard Water Buildup

Water quality can play a major role as well. Hard water deposits from minerals such as calcium, magnesium, and copper can build up on the hair, forming a dull film that leaves it looking flat and lifeless.
 
If you live in an area with hard water, using a chelating or clarifying shampoo occasionally - or installing an a water softener system - can help remove mineral buildup and restore brightness. Just be sure to follow any clarifying treatment with a rich conditioner, since deep-cleansing products can be drying if overused.
 

Color-Safe Washing & Temperature Control

At home, choose shampoos and conditioners that are specifically formulated for color-treated hair. These products are generally gentler, sulfate-free, and help reduce premature fading while maintaining moisture.
 
Washing your hair with lukewarm rather than hot water can also help keep the cuticle smooth and the color vibrant, as hot water swells the hair shaft, strips away moisture, and accelerates color loss.
 

Heat Protection & UV Shielding

Finally, don't overlook daily protection. High heat from styling tools can bake off glosses and degrade the hair shaft, so always apply a heat protectant before blow-drying or flat-ironing.
 
Protecting your hair from UV rays with a hat or UV-filtering spray also prevents photo-oxidation, which rapidly turns shiny shades dull and brassy. Finishing your style with a light hair oil or shine spray will help lock in moisture and keep your color looking freshly done.
 
©Hairfinder.com
 
See also:
 
The purpose of shine enhancers
 
Can you do a cellophane treatment yourself?
 
The pros and cons of a cellophane treatment