How to effectively treat hair damaged by highlights
Jenna
Summary
From choosing sulfate-free shampoo to plant-based oils, including repairing masks and daily habits: here's a complete method to restore the hair fiber after highlights, regain more supple, less coarse, and visibly brighter hair. To go further, also consult the guide dedicated to caring for bleached hair, which details the effects of bleaching and appropriate responses to repair weakened hair.
Understanding why highlights damage hair
The damage doesn't stay on the surface. It reaches the hair shaft, disrupts its structure, and explains why hair damaged by highlights becomes coarser, more porous, and harder to style.
What bleaching actually does to the hair fiber
Hair damaged by highlights is damaged deep down. Bleaching combines peroxide, which generates free radicals capable of fragmenting keratin chains, and ammonia, which lifts the cuticle scales without them fully returning to their place afterwards. From the first applications, the cohesion of the hair shaft decreases.
In addition, oxidizing agents break some of the disulfide bonds responsible for natural strength and elasticity. The protective lipid barrier also depletes, which promotes the escape of water and proteins from the hair fiber.
This increased porosity creates a lasting imbalance. Water enters quickly, then escapes just as quickly, leaving the fiber dry, dull, and prone to breakage. When a hair can be stretched beyond 30% without returning to its original shape, it indicates a clear loss of internal strength, often heralding hair breakage during brushing or drying.
Repeated bleaching further accentuates this process. An already weakened fiber is less resistant to each new application, and hair damaged by highlights then more easily develops dry ends, with diffuse breakage and repeated split ends.
Recognizing the signs of highlight-damaged hair
After bleaching, the signs quickly become apparent. Dull, rough-to-the-touch, and difficult-to-detangle hair often indicates a lifted cuticle and an irregular surface.
- Persistent frizz: the hair fiber easily swells on contact with ambient humidity, without being able to retain it properly.
- Open ends and split ends: the material has split along its length; hair treatments can limit worsening, but a trim is often necessary.
- Frequent tangles: the rough surface catches neighboring strands, which promotes breakage and makes styling more aggressive for weakened hair.
Other signs confirm the state of fragility: dry feel, loss of shine, reduced elasticity, and the appearance of broken hair during brushing. The routine must then rely on a targeted treatment capable of supporting keratin and closing the scales on weakened lengths, in concrete application.
To extend this reading, the guide dedicated to highlighted hair care details the actions to adopt to limit breakage, repair hair sensitized by bleaching, and support the lengths throughout hair care treatments.
Which shampoo to choose for highlight-damaged hair
Shampoo begins the care routine. For hair damaged by highlights, it's a decisive step: a formula that's too harsh increases porosity, while a well-formulated shampoo for damaged hair cleanses without aggression and prepares the fiber to receive subsequent treatments.
Criteria for a shampoo suitable for highlighted hair
For highlighted hair, certain benchmarks truly make a difference. The formula must be sulfate-free, contain humectants like glycerin and panthenol, as well as proteins, with an acidic or neutral pH: the treatment acts where the fiber has lost its cohesion, limiting excessive opening of the scales.
- Sulfate-free: overly harsh cleansing agents remove the already weakened hydrolipidic film, which accentuates dryness and further weakens the lengths.
- Acidic or neutral pH: a controlled pH helps the cuticle stay smoother after washing, which limits dehydration and preserves the shine of the highlights.
- Humectant and protein active ingredients: glycerin, panthenol, and proteins compensate for some of the losses related to oxidation and gradually improve the suppleness of damaged hair.
In addition, conditioner has a specific place in the routine. This conditioner is applied to the lengths and ends to seal in moisture without weighing down the roots. After the last rinsed treatment, a diluted vinegar rinse can also help smooth the surface of the fiber, limit limescale deposits, and revive the shine of hair damaged by highlights.
The right washing technique to avoid further damage
For hair damaged by highlights, a gentle scalp massage with fingertips is sufficient, without rubbing the lengths or pulling on the most fragile strands. Rinse with lukewarm water, then cooler water at the end of washing: in concrete application, this helps to tighten the cuticle and better retain hydration.
Frequency also deserves to be adjusted. Two to three washes per week allow sebum time to play its protective role between each shampoo. As for purple shampoo, it remains useful for correcting yellow tones in highlighted hair, but only occasionally, about every ten days: it replaces neither a damaged hair shampoo nor a deep repairing treatment.
Repairing mask: an essential treatment for damaged hair
Repairing damaged hair requires more than just a cosmetic effect on the surface. A well-formulated repairing mask helps to replenish the hair fiber with keratin, restore hydration, and deeply smooth the cuticle. Regularity changes everything: the difference is played out over time.
Which active ingredients to prioritize in a mask after highlights
After highlights, the hair fiber often loses both substance and water. An effective damaged hair mask therefore combines several families of active ingredients: hydrolyzed proteins, humectants, and surface lipids. The treatment acts where the hair is weakened, with an internal action on the cortex and an external one on the cuticle.
Phytokeratin fills in weakened areas and strengthens the protein structure. In addition, panthenol retains water in the fiber, aloe vera provides rapid hydration, ceramides restore the lipid barrier, while shea butter nourishes and protects the driest lengths. The AHA + omega-9 combination supports this repair by smoothing the surface and consolidating internal bonds.
| Active Ingredient | Main Action | Visible Benefit |
| Phytokeratin | Strengthens weakened areas, fills protein gaps | +20 to 30% breakage resistance in 4 weeks |
| Panthenol | Retains water in the cortex | Immediate softness, increased suppleness |
| Aloe vera | Intense and rapid hydration | +15% hydration in 10 minutes |
| Ceramides | Reconstitute the lipid barrier | Reduced porosity, less frizz |
| Shea butter | Nourishes and protects dry lengths | Softened fiber, less brittle ends |
| AHA + omega-9 | Internal and external bilayer repair | Smoothed cuticle, strengthened internal bonds |
How to apply a mask to maximize results
The Elyara hair mask, formulated with over 94% naturally derived ingredients, is applied to damp, well-towel-dried hair. Too much water hinders the penetration of active ingredients, including phytokeratin, especially when the fiber is already porous.
Distribute the repairing mask on the lengths and ends, without overloading the roots. A warm towel or plastic cap improves the diffusion of active ingredients, as heat slightly softens the scales. A 15 to 20-minute application is sufficient to enhance the mask's effectiveness on damaged hair.
Once the mask is rinsed, a lukewarm then cool stream of water helps to tighten the cuticle. Then, a leave-in treatment extends the protective action until the next application.
Frequency and duration of a treatment for very damaged hair
Frequency depends on the level of damage. For very damaged hair, two applications per week for four to six weeks is a good rhythm. If the lengths are only sensitized, one to two weekly applications over three to four weeks are often sufficient.
Fine or oily hair requires more moderation: one application per week helps to care for the fiber without weighing it down. Once the general condition has improved, keep a nourishing mask in your routine to stabilize results and continue to protect hair exposed to aggressions.
Oils and leave-in treatments to nourish damaged hair
A nourishing mask helps repair the hair fiber deep down. However, to nourish hair over time, this action must be extended between washes. Oils and leave-in treatments then take over: they limit dehydration and reinforce surface protection between each wash.
Which plant-based oil to choose for damaged hair after highlights
After highlights, the hair fiber often loses suppleness and lipids. A well-chosen plant-based oil for damaged hair compensates for this fragility: it helps retain hydration, reduces breakage, and protects the fiber against friction and styling.
Argan and jojoba are well-suited for fine or sensitized lengths, as their texture remains light. Conversely, coconut is more suitable for thick or very porous hair, which requires a richer supply to deeply nourish the hair. Shea, which is more enveloping, should be favored for very dry lengths or fragile ends.
In practice, a few drops of hair oil are sufficient for the ends. For damaged hair, the goal is not to saturate, but to provide the flexible film that is missing after highlights.
Oil bath and leave-in treatment for continuous repair
After shampooing, a leave-in treatment enriched with hyaluronic acid and silk proteins provides immediate support. It tames frizz, improves the hair fiber's hold, and enhances protection against heat and external aggressions. Camelina, rich in omega-3 and unsaturated fatty acids, strengthens the hair's lipid film after highlights: it is particularly suitable for dry and devitalized lengths.
In addition, an oil bath with argan or castor oil once a month before shampooing helps limit breakage. Thirty minutes under a cap are often enough to soften sensitized highlights, after a few weeks of regular practice.
A night serum, applied two to four times a week, extends this work during sleep. Once the mask is rinsed, this type of formula supports the action of the mask and oil on fragile lengths, with no residue upon waking.
Daily routine and habits to protect hair damaged by highlights
Washing alone is not enough to repair damaged hair. The result also depends on daily habits: drying, styling, accessories, sleep. In addition, good habits extend the effect of treatments and reduce daily damage.
Heat protection and suitable drying for highlighted hair
For highlighted or bleached hair, heat requires strict limits. Hair dryer and straightener use should be limited to twice a week, with a daily temperature of 120 °C. Above 180 °C, the keratin already weakened by bleaching or successive bleaches degrades further, which accentuates porosity and promotes brittle hair.
- Controlled temperature: set heating appliances to a maximum of 120 °C for everyday use; only exceed this limit exceptionally, never exceeding 180 °C.
- Aloe vera-based heat protector: apply before each heat styling; it creates an insulating protection and protects the fiber up to 230 °C.
- Prioritize natural drying: air-drying or using the cool air setting reduces excessively rapid water evaporation and limits cumulative damage.
Before prolonged sun exposure, a natural anti-UV spray or a scarf makes a difference. UV rays oxidize hair lipids and worsen dryness, especially on hair damaged by highlights. This protection should be prioritized on the lengths, as soon as the hair is already sensitized.
After swimming, an immediate rinse removes salt and chlorine, two factors that make hair even more porous. In addition, an anti-limescale filter or a rinse with soft water limits mineral deposits that dull bleached hair and complicate the recovery of damaged hair.
Accessories and habits that limit daily breakage
Heat is not the only cause of breakage. Friction, tension, and overly harsh detangling are just as important, especially for brittle and damaged hair. A microfiber towel is a useful replacement for a terrycloth towel: by gently pressing instead of rubbing, it better respects damp hair, which is more vulnerable after highlights.
- Wide-tooth comb: detangling from ends to roots, on wet or dry hair, reduces mechanical breakage by about 30% compared to a brush used in the opposite direction.
- Silk or satin pillowcase: it reduces nocturnal friction responsible for brittle hair and better preserves treatments left on the fiber.
- Metal-free spiral scrunchies: they limit tension points, unlike classic elastic bands that mark and weaken the lengths.
- Regular trim of the ends: every two months with professional scissors, to remove split ends and prevent them from moving up the hair shaft.
During the recovery phase, it's best to suspend additional chemical treatments: coloring, perming, or straightening. On very damaged hair, these techniques hinder repair and can permanently worsen the condition of the fiber. The difference lies in the duration: a simple, consistent, and stable routine helps repair hair more than an accumulation of aggressive actions.
How long does it take to recover very damaged hair?
The first changes often appear between two and four weeks: a softer feel, less frizz, better manageability. To sustainably repair hair and restore a more resilient fiber, it generally takes two to three months. This timeframe depends on the initial porosity level and the history of bleaching.
When hair has undergone repeated bleaching, frequent highlights, or double bleaching, recovery can take six months to a year. To repair very damaged hair, alternating between protein masks, monthly oil baths, and daily leave-in treatments remains relevant.
If a straw-like effect sets in, it often indicates a combined lack of water and protein. The damaged hair routine detailed by Elyara structures this work week after week, regardless of the degree of porosity or the history of bleaching.
Frequently Asked Questions
How to recover your hair after highlights?
After highlights or bleaching, recovery involves a regular routine. The objective is clear: repair weakened hair without overloading the fiber. A sulfate-free shampoo with an acidic pH helps smooth the cuticle, then a reparative mask with phytokeratin is applied twice a week for four to six weeks. In addition, a light oil should be preferred on the lengths, with a daily leave-in treatment.
The difference lies in duration. Reducing heated styling tools, avoiding new bleaching, and trimming ends every six to eight weeks limits breakage and slows the appearance of split ends. The first changes are often seen between two and four weeks. To repair damaged hair more completely, allow two to three months if the fiber is moderately affected, and longer after repeated bleaching.
How to get rid of the straw-like effect on hair after highlights?
The straw-like effect appears when the fiber lacks both lipids and protein material, which frequently happens after highlights or bleaching. A nourishing mask rich in phytokeratin and hydrolyzed proteins helps restore body, while a monthly oil bath, with castor or shea oil, softens the texture.
In practical application, a leave-in treatment enriched with humectant agents and silk proteins extends comfort between washes. The treatment works where hair loses its suppleness most quickly: on sensitized lengths. With consistent hair care for two to three months, the dry appearance significantly recedes, and the fiber regains a softer feel, even after several months of degradation.
Can damaged and brittle hair be repaired without cutting?
It is possible to repair damaged hair and visibly reduce breakage, but not to erase already split ends. When an end is split, cutting remains the only clean solution. However, on the rest of the fiber, a reparative mask combined with a fatty substance and a leave-in treatment helps strengthen the keratin still present and improve the hold of the weakened fiber.
Once the mask is rinsed, the fiber often appears more supple. To repair damaged hair sustainably, consistency is key: it improves elasticity, feel, and resistance, even after repeated bleaching.
