Many people with blonde hair see their hair turn brown as they get older, but why does it happen? It can be due to genetics, age, or controllable elements like product buildup or environmental factors.
You can prevent the change or revert discolored blonde hair to its original color. This article explores the causes, prevention, and solutions of blonde hair turning brown.
Key Highlights
- Darker roots often mean your new hair is growing in darker.
- Brown or dull ends are often buildup or staining on the hair.
- Hard water, product buildup, and fading toner can make blonde hair look darker.
- Use a chelating or clarifying shampoo first, then condition well.
- Use purple shampoo 1 to 2 times a week if your hair looks yellow or orange.
Why Does Blonde Hair Turn Brown?
Here are the top reasons for blonde hair turning brown.
Hormones and New Growth
Melanin production in the hair follicle can increase or decrease as hormones change during different life stages. These changes affect new hair growth, so your roots may grow in darker while your older blonde lengths stay the same color.
Also, blonde hair has very little eumelanin. But as you age, eumelanin production in the follicle can increase, which can make new growth look darker over time.
Environmental Factors
Pollution can make blonde hair look darker by depositing dirt and soot on the surface. UV rays often lighten hair by breaking down melanin (photobleaching), but they also damage the cuticle, making hair more porous. This porosity allows pollutants and minerals to enter more easily, which can make blonde hair look muddy, dull, or darker. Humidity can lift the cuticle and increase frizz, which reduces shine and can make blonde hair appear darker than it is.
Frequent Use of Hard Water
Hard water contains a high level of minerals, which can build up on the hair shaft and make blonde hair look dull, muddy, or darker. Even if your water isn’t hard, metals from older plumbing can get into your water.
The minerals in hard water can cause blonde hair to become dry and brittle, resulting in a dull appearance.
Build Up
Products like mousse, hair spray, and gel deposit gunk that weighs down your hair. Rust buildup can also shift your hair color, especially if you use well water. Blonde hair absorbs product buildup easily.
Buildup coats the cuticle and reduces shine. As a result, blonde hair can look dull and darker on the surface.
Too Much Heat
Excessive heat from styling tools leads to dryness, breakage, and split ends. The damaged structure makes your hair more prone to discoloration from the elements. Also, when you rinse your hair with hot water, the cuticles open up and fade faster.
Excessive Use of Purple Shampoo
Purple shampoo counteracts the yellow undertones to enhance cool-toned hair color. Nonetheless, too much use of purple shampoo can cause your hair to absorb purple pigment into the cuticle. As a result, your blonde hair can look darker or duller.
What To Do To Prevent Blonde Hair From Turning Brown?
Blonde hair turning darker at the roots due to hormones isn’t something you can prevent. However, for other external factors, use the preventive measures below to maintain your blonde hair.
Avoid Hard Water
Add a water filter to the house if your area has hard water. That way, you keep out the minerals that can dye your blonde hair. If a whole house water system is too expensive, invest in a showerhead filter.
Protect From Chlorine
Wear a swim cap before you get into the pool to protect your hair strands against contact with chlorinated water.
Alternatively, spray your hair with tap or filtered water before entering the pool. The unchlorinated water ensures your hair doesn’t soak up much chlorine from the pool water.
Avoid Hair Build-Up
Use vinegar, clarifying, or chelating shampoo to strip the build-up from each hair strand. Clarifying shampoo removes product build-up, while vinegar and chelating shampoo remove metals from your hair.
Chelating shampoos also remove deposits that fade color to prolong the life of your hair color.
Cut on the Heat
Use quality heat protectants on your hair before you use heat tools. Then, set the devices to low or medium heat levels to prevent hair damage.
If you must wash your hair with hot water, use cold water rinse to close the cuticle cells. That way, you give your hair a glossier look and prevent dullness.
Treat With Leave-In Conditioner
A leave-in conditioner forms a protective barrier around your hair shaft. The layer protects your hair from environmental pollutants that could cause this color change.
For example, collagen-infused leave-in conditioners protect your hair from damage by heat tools.
Keep Off Harsh Chemical Treatments
Blonde hair turning brown can result from the frequent use of harsh chemicals. So, use sulfate-free shampoos that reduce brassiness. Also, opt for natural products that are gentle on your hair and scalp.
How to Fix Blonde Hair That Turned Brown
You can embrace healthy hair care or use chemicals or natural means to regain blonde hair.
Safety Notes
- Avoid using lemon juice or hydrogen peroxide in the sun because it can burn skin and damage hair.
- Do a strand test before using clarifying, chelating, toner, or vitamin C treatments.
- Stop and rinse if your scalp stings or burns and use gentle products.
- If the problem is only dark roots, it is new growth. If the lengths look muddy, it is usually buildup or minerals.
- Use chemicals: Add highlights, blonde dyes, or toners to restore your blonde bombshell presence. Bleaches work faster, but hair dyes are better than bleaches if you want to maintain healthy hair.
- Use a chelating or clarifying shampoo: Chelating shampoo helps remove mineral deposits, while clarifying shampoo helps remove product buildup that can make blonde hair look muddy or darker.
- Try a vitamin C wash: Vitamin C (ascorbic acid) can help lift some staining and faded toner. Mix crushed vitamin C tablets with shampoo, apply briefly, then rinse and condition.
- Use blonde hair-specific products: Use shampoos and conditioners designed for blondes to help manage brassiness and reduce dullness. Also, use products with natural ingredients like calendula and chamomile.
- Nourish your hair: Use hydrating masks to replenish hair moisture. Also, use butter and natural oils that protect you from harsh weather and chemicals that discolor your hair.
- Rinse with chamomile tea: Boil five tea bags of chamomile in two cups of water and then let stand for a few minutes. Apply and leave in the mixture after you wash and condition your hair.
Natural methods like chamomile tea aren’t a one-time solution. So, you’ll have to repeat the procedure several times for desired results.
So, Why Is My Blonde Hair Turning Brown?
Your blonde hair turns brown because of the following factors.
- Hormonal changes that can increase eumelanin in new growth (roots)
- Deposit of buildup from minerals, sebum, and hair products
- Cuticle damage plus pollutants or minerals that can stain hair and make blonde lengths look muddy
- Inappropriate practices like the use of excessive temperatures in hair styling tools
Frequently Asked Questions
Many natural blondes see their hair darken with age. Hormones and aging can increase eumelanin in the hair follicle, so new hair growth (roots) can come in darker.
Bleached hair cannot biologically return to its natural color. If it looks brown later, it is usually mineral staining (hard water), product buildup, or fading toner that reveals darker, brassy undertones.
Yes. It is common for natural blondes to see darker roots over time because the follicle can produce more melanin. The lighter lengths do not change biologically, but they can look darker from buildup or staining.
Trending Topics