If your hair floats, it has low porosity, which means it will have a more difficult time both taking in and holding onto color. If your hair sinks, it has high porosity, which means it will take color but may not hold onto it too long.
pH Levels: The pH level of your hair can influence color absorption. If your hair is too alkaline or too acidic, it may resist color. Hair Health: If your hair is overly damaged or has buildup from products, it may not take color well.
Your hair follicles produce less color as they age, so when hair goes through its natural cycle of dying and being regenerated, it's more likely to grow in as gray beginning after age 35. Genetics can play a role in when this starts.
More often than not a colour which won't hold is the result of a lack of treatment. However, in the case of home colouring, the problem can often be due to the colouring process. Either the application isn't even, the waiting time is too short or you aren't using the right product for the desired effect.
There are a few reasons the dye isn't taking; 1) It could be that your hair is naturally resistant to bleach 2) the developer may not be strong enough 3) you may not be leaving the dye in long enough. 4) direct dyes usually require hair to be lifted to a level 10 blonde or higher for best results.
Pigment loss occurs naturally in hair as we age. Along with the changes in pigmentation, grey hairs can also undergo structural changes Grey hair is often also coarser. The outer cuticle layer of greys can be more tightly packed and layered, making them resistant to colour absorption.
Low porosity hair doesn't absorb product
Because the cuticles are so tight, products including creams, oils and water-based formulas, tend to sit on top of the hair instead of being absorbed.
Most of the time it depends on the health of the hair. If you are suffering from hair loss or have rough and damaged hair, the colour will not last. This happens because the hair cuticles are open and more porous. And when the cuticles are open, the pigment doesn't stick to the hair.
Right after coloring the hair, wait two or three days for the first wash. This will allow the cuticles to seal in the new color and prevent premature color loss. It is vital to use sulfate-free shampoos and conditioners that gently treat and nourish the hair, such as the Re/Start™ Color Protective Gentle Cleanser.
Our favorite color-depositing conditioner is the dpHue Gloss+ thanks to its wide range of shades, easy application, and ability to soften and hydrate hair. For a clear gloss that adds shine to any hair color, we recommend the Pureology Color Fanatic Top Coat + Sheer.
Several factors contribute to gray hair. Genetics plays a significant role, but environmental influences, such as exposure to heavy metals, smoking, excessive alcohol consumption, and physical illness, can also impact hair color. Stress and hormonal imbalances are common culprits for both men and women.
Vitamins B6 and B12 have both been proven to boost melanin in your hair follicles. B12, known as cobalamin, also increases your red blood cell production which promotes healthy hair growth. You can take a supplement that contains these vitamins or you can supercharge your diet with foods high in B12 and B6.
A review of research suggests that proper supplementation may reverse premature graying in those who are deficient in certain nutrients, including iron, vitamin D, and vitamin B12. However, even though some supplements are specifically sold as “anti-graying,” there aren't any studies that prove they work.
To preserve your hue, you'll need to pamper your hair a bit. That means adding extra protection from everyday stressors like water, shampoo, heat and sun, as well as nourishing hair with plenty of hydration. Color maintenance takes more attention and care, but it's worth it to maximize those beautiful results.
Red hair is notoriously difficult when it comes to upkeep. While it's the hardest color to fully strip from your hair, it's also the first to fade, often lightening drastically within the first few washes. So unless you're wanting to touch-up your own color at home, it would be wise to skip the scarlet shades.
The vinegar actually helps the hair dye to remain bonded to the hair, according to my awesome stylist Viviane of Marina Beach Hair.
Both protein (keratin) and moisture are essential components of healthy hair—if they're missing, your hair color could fade quickly. If hair is in poor condition (we're looking at you split ends), a protein or moisturizing treatment may be needed before you color.
The Science Behind Hair Color Absorption
If it's too closed or damaged, dye can't penetrate well. Healthy hair with an open cuticle layer will soak up color better, giving you that vibrant look. The pH level and the porosity of your hair also affect how well it takes color.
Hard water is perhaps the most frustrating cause of fading hair color. That's because hardness isn't immediately obvious — which means you could use this water on every wash and inadvertently make things worse. Hard minerals can fade your hair dye and cause other issues.
It could be that the hair dye you were using has put a layer around your hair that prevents the new dye from adhering well to your hair. This is especially the case when using henna, a reason why other hair dyes don't take.
If longevity is your top priority, deep brunette or black tones generally last the longest with proper care. Of course, every shade has its own charm and maintenance level.
Best Ways to Help Hair Color Last
Use products that are formulated for color-treated hair. Style and dry your hair without using heat tools. Apply a SPF spray to protect your hair from the sun. Deep condition your hair before and after dyeing it.
We tend to think of curly hair as dense and prone to dryness. Low porosity curls tend to be looser, wavy, or S-shaped. The curls are distinct with a tight, flat cuticle that prevents moisture from entering and exiting the hair. This is why low porosity hair can often look limp or flat.