Blonde hair or highlights? How to avoid a greenish tint

Summer is undoubtedly everyone's favorite season, but for those with blonde hair, highlights, balayage, or other light colors, it can become a real nightmare. The combination of intense sun, chlorine from swimming pools, and sea salt creates an aggressive cocktail that directly attacks the pigmentation and health of the hair fiber.

It's probably happened to you: you start your vacation with a stunning platinum or honey blonde, and after a week of swimming, your hair starts to show straw-like, orange, or, in the worst-case scenario, that dreaded greenish tint. In this article, from Cosméticos de la Rosa , we explain why this happens and give you the ultimate guide to protecting your color so your hair is as vibrant as when you first left the salon in September.

1. Why does hair turn green or change color in summer?

There's a common belief that chlorine is the direct culprit behind green hair. However, the real culprit is oxidized copper. Swimming pools are often treated with algaecides containing metals like copper. When this metal comes into contact with porous hair (such as blonde or bleached hair) and combines with chlorine, it oxidizes and deposits on the hair fiber, creating that greenish tint.

On the other hand, the sun's UV radiation acts as an aggressive "natural bleach." It breaks down keratin bonds and oxidizes dye pigments, causing blondes to lose their original hue and turn yellowish or coppery.

2. Preparation: Your best defense starts before you leave home

Don't wait until you're relaxing on the sun lounger to take care of your hair. Prevention is 80% of the success.

The freshwater trick

Before jumping into the pool, take a shower and thoroughly wet your hair with fresh water. Why? Imagine your hair is a sponge. If the sponge is already saturated with clean water, it will absorb much less of the chlorinated water or metals from the pool. This simple step drastically reduces the absorption of harmful substances.

Create a physical barrier with oils and protectants

Dry hair is vulnerable hair. At Cosméticos de la Rosa we always recommend applying a hair sunscreen or dry oil before sun exposure. These products create a hydrophobic (water-repellent) film around the cuticle, preventing external agents from penetrating.

3. Washing routine: The post-swimming "detox"

If you're blonde, your usual winter shampoo isn't enough in August. You need products that cleanse deeply without stripping your color.

• Chelating or anti-chlorine shampoos: You need a shampoo that can remove chemical and mineral residues. Look for formulas that clean copper and salt deposits. It's vital that you wash your hair as soon as possible after swimming to prevent the chemicals from settling in.
• The importance of pH: Sunlight and chlorine raise the pH of hair, opening the cuticle and exposing the inner structure. Using products with a balanced pH helps seal the cuticle, locking in color and providing instant shine.

4. Toning: The secret to keeping blonde hair "cool"

Even with the best care, blonde hair tends to "oxidize" towards unwanted warm tones. This is where our star products come in: purple or blue shampoos and masks.

• Violet Shampoo: Violet pigments counteract yellow tones. If you notice your blonde hair turning brassy, use it once or twice a week.
• Toning Masks: These are even more effective than shampoo because, in addition to correcting color, they provide the extra hydration that bleached hair desperately needs in the summer. At Cosméticos de la Rosa we offer a selection of professional masks that deposit pigment in a controlled manner without staining the hair fiber.

5. Deep Hydration: "Straw" hair is not an option

Bleaching already weakens the hair structure. Add extreme heat, and the result is brittle hair. In summer, replace conditioner with a hair mask every time you wash your hair, if necessary. Look for ingredients like keratin, argan oil, or hyaluronic acid.

For an intensive treatment, apply the mask to dry hair before going to bed, gather it into a low bun, and wash it in the morning. You'll notice a complete transformation in your hair's elasticity.

6. The essentials from Cosméticos de la Rosa for your makeup bag

To make your search easier, we've selected the must-have products for your suitcase this summer:

1. Thermal and Sunscreen: Acts as a shield against UVA/UVB rays. Apply it several times a day, just like you do with your body sunscreen.
2. Split End Serum: The sun often "burns" the ends of the hair, leaving them split. A couple of drops of serum at the end of the day will seal the hair fiber.
3. Sulfate-free shampoo: To prevent color from washing out quickly, opt for gentle formulas that respect the scalp's natural oils.
4. Detangling spray with UV filter: Ideal for combing your hair after swimming without breaking it, as hair is much more fragile when wet.

Conclusion: Your blonde hair can survive the summer

Maintaining a luminous, healthy blonde hair color free of green tones isn't magic; it's about consistency and using professional products. Chlorine and sun are powerful enemies, but with the right protective barrier and a weekly toning routine, you can enjoy summer without fear of looking in the mirror.

Is your hair already feeling dry or developing strange tones? Don't wait until it's too late. Visit our Sun Protection Hair Care section and get your rescue kit. At Cosméticos de la Rosa we select only the best professional brands so your only worry this summer will be deciding which beach to show off your gorgeous hair on.